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danny writes "Modern network devices have to handle traffic in huge volumes at low latencies; achieving this requires ideas and approaches from all of computer science: hardware, algorithms, protocols, software engineering and their integration in a discipline which Varghese calls "network algorithmics". Read the rest of Danny's review. Network Algorithmics: An Interdisciplinary Approach to Designing Fast Networked Devices author George Varghese pages 465 publisher Morgan Kaufmann rating 9 reviewer Danny Yee ISBN 0120884771 summary pulling out all the stops to fix bottlenecks

After an introduction in chapter one to bottlenecks and techniques for avoiding them, Varghese provides a brief overview of protocols, hardware, network architectures, and operating systems, with examples, in chapter two. This is best suited as a refresher: Network Algorithmics assumes a general familiarity with networking protocols, operating systems and computer architecture, and if used as a text would be suitable for higher undergraduates. (The exercises at the end of each chapter are often open-ended.)

Chapter three introduces the fifteen implementation principles that are the core of Network Algorithmics: P1 Avoid obvious waste; P2 Shift computation in time (precompute, evaluate lazily, share expenses or batch); P3 Relax system requirements (trade certainty or accuracy for time, shift computation in space); P4 Leverage off system components (exploit locality, trade memory for speed, exploit existing hardware), P5 Add hardware (use memory interleaving and pipelining, use wide word parallelism, combine DRAM and SRAM effectively); P6 Create efficient specialized routines; P7 Avoid unnecessary generality; P8 Don't be tied to reference implementation; P9 Pass hints in layer interfaces, P10 Pass hints in protocol headers; P11 Optimize the expected case (use caches); P12 Add state for speed (compute incrementally); P13 Optimize degrees of freedom; P14 Use bucket sorting, bitmaps; and P15 Create efficient data structures. Chapter four presents fifteen problems that illustrate these principles in action, with hints to solutions.

Part II of Network Algorithmics is devoted to end-nodes. A chapter "Copying Data" takes a web server, delivering files from disk to network, as the prototype, and explores different approaches to reduce pressure on the memory and I/O bus by reducing the number of copies required: copy-on-write, fbufs, RDMA, IO-Lite, and more. It also touches on making cache use more effective and the tantalizing possibilities of "integrated layer processing".

"Transferring Control" looks at minimizing scheduling overhead and maximizing concurrency: at context-switches, processes, threads, and event-driven servers. It evaluates the existing Unix select() call and considers ways of speeding it up, with and without changing the API. And it touches on ways of avoiding system calls and reducing interrupt overhead.

There are three shorter chapters. "Maintaining Timers" explores hashed and hierarchical timing wheels, the BSD implementation, and fine granularity. "Demultiplexing" looks at the development of packet filters: CMU/Stanford, Berkeley, Pathfinder, hardware, and Dynamic (generating filter code in real time). And "Protocol Processing" looks at some miscellaneous tasks that can become bottlenecks: buffer management, CRC checks and checksums, TCP and UDP protocol processing, and packet reassembly.

So far I've only skimmed Part III, "Playing with Routers". This has chapters on "Exact-Match Lookups", "Prefix-Match Lookups", "Packet Classification", "Switching", "Scheduling Packets", and "Routers as Distributed Systems". And Part IV offers chapters on "Measuring Network Traffic" and "Network Security", along with a summary and overview.

Varghese gets right down into the details in some places, but he sets the material he covers into its broader context. He often takes a historical approach, looking at how implementations have been driven by changing requirements. And he stresses that only with a broad view can the overall costs and possible optimizations be seen: with web server performance, for example, it is necessary to consider "the whole system, from HTTP and its headers, to the file system, and down to the instruction caches". Where many computing disciplines emphasize the isolation of components, network algorithmics stresses links across layers and boundaries. (It's not overdone, but approaches and principles are often illustrated with analogies to ordinary life serving tables in a restaurant, for example or parallels with other areas of computing.)

Purists might find the practical approach of network algorithmics distressing Varghese admits that it "may seem drab and shallow" compared to "the beauty of theoretical techniques" but it has an attraction all of its own. I've often felt that "computer science" as commonly constructed lacks any coherence, spanning everything from nearly pure mathematics to hardware and engineering, but Network Algorithmics has made me rethink that.

Little in Network Algorithmics is relevant to my job as a system and network administrator I just plug switches in and configure them, and don't have to worry about their internals but I found it fascinating. Apart from curious general readers with a computer science background, or hackers who enjoy stretching their minds, the obvious audience is anyone building high-performance network devices or looking at optimization of networking code, say in the Linux kernel.

Danny Yee has written over 900 other book reviews."

You can purchase Network Algorithmics: An Interdisciplinary Approach to Designing Fast Networked Devices from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "Do you run a mail server using Postfix? If so, then you should check out the latest addition to my book reviews, a look at Hildebrandt and Koetter's Book of Postfix." Read on for the review. The Book of Postfix author Ralf Hildebrandt + Patrick Koetter pages 464 publisher No Starch Press rating 9 reviewer Danny Yee ISBN 1593270011 summary understanding and implementing Postfix mail systems

When The Book of Postfix arrived, I jumped straight to the chapter "Understanding SMTP Authentication", since that was something I wanted to get working. This explains the problem -- how to allow travelling users with unknown IP addresses to send mail through a mail server without opening it up to spammers -- and clearly lays out the options: SMTP-after-POP or -IMAP, SMTP authentication, certificate-based relaying using TLS, or some kind of VPN. "If you want something simple, independent, and secure, SMTP AUTH is probably for you."

The remainder of the chapter explains how to set up a backend for SMTP authentication -- a choice between saslauthd and other options -- and the following chapter then explains how to configure Postfix to use it. This approach is typical of The Book of Postfix, which tackles many topics with paired chapters, the first covering background, theory and any ancillary systems and the second covering the actual Postifx configuration. It also emphasises progressive implementation accompanied by testing, which is most reassuring when modifying production servers.

Other chapters in Part III, "Advanced Configurations", cover running Postfix chrooted, using TLS (two chapters), mail gateways and multiple domains. There's also a chapter that works through building a complete mail system for an organisation. Part IV covers tuning and the appendices cover installing Postfix (for Debian or Redhat Linux, or from source) and troubleshooting.

Moving backwards, the hundred and twenty pages in part II cover content controls. Some basic postmaster background is followed by pairs of chapters on each of message transfer restrictions, built-in content filters, and external content filters. I've been working through these, improving my anti-spam controls, and they're proving really helpful; my next step will be implementing amavisd-new.

Part I explains how to set up a host to run Postfix, with ancillary services such as DNS, NTP and syslog, then how to set up a simple single domain configuration, either on a permanently connected machine or on a dialup machine. It then gives a brief description of Postfix's basic anatomy. Part I is concise -- just fifty pages -- but it offers everything most people will need for a basic setup.

There's no cruft in The Book of Postfix: it's a fairly chunky book, but none of it is padding. Excerpts from configuration files include just the right amount of context and the diagrams (and a very few screenshots) are integrated with the text and tightly focused. Given the scope, it's probably overkill for basic Postfix users, though the first fifty pages would make an excellent "getting started" guide for them.

There are some omissions. There's no general explanation of how the master.cf file works, for example, or of rewriting -- neither "masquerading" nor "canonical" appear in the index or glossary. The "Anatomy of Postfix" chapter could definitely have been more comprehensive.

How does The Book of Postfix compare with the O'Reilly book Postfix: the Definitive Guide ? The Book of Postfix is nearly twice the length and provides much more detailed step-by-step explanations and more on ancillary systems -- it explains how to set up backends for SMTP authentication, for example, rather than just telling you that you need one.

I highly recommend The Book of Postfix to anyone using Postfix and wanting to do more than the basics with it.

Danny Yee has written over 800 other book reviews. You can purchase The Book of Postfix from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "I haven't stopped writing book reviews, it's just been a while since I wrote any suitable for Slashdot. Read on for my review of China Mieville's Iron Council." Iron Council author China Mieville pages 471 publisher MacMillan rating 5 reviewer Danny Yee ISBN 0345464028 summary an inventive but disappointing fantasy

The world of the New Crobuzon city-state is loosely based on the European industrial revolution's "steam age", mixed together with an extraordinarily inventive range of fantastic features. People are "remade" into strange forms in punishment factories, there are all kinds of nonhuman sentients -- cactus people, insect-like kephri, and more -- and there are a diverse range of magics. The Mayor and Parliament rule through a brutal Militia, but revolutionary factions abound and a draining war with Tesh is fueling discontent.

Cutter leads a band of insurrectionists from the Caucus, looking for the golem creator Judah. They fight a series of battles as they travel across a war-torn landscape, seeking the semi-mythical Iron Council, a group of railway workers who rebelled and escaped into the wilderness. Meanwhile Ori is involved with the shifting revolutionary factions in New Crobuzon. He joins one of the more violent groups, which eventually launches a plot to assassinate the Mayor.

Much of the "colour" of Iron Council comes from politics, with allusions to historical groups and events, most obviously to various socialist and anarchist movements and to the Paris Commune. It attempts to harness the pathos and power of revolutionary myth and history, but the result is mostly poor pastiche, nowhere approaching the drama of real history. The historical links are weak, often mismatched with the peculiar features of New Crobuzon, and unable to carry the sentiment Mieville tries to invest them with. And there's not enough background for anyone to actually care about the New Crobuzon revolution in its own right: Iron Council has neither actual political philosophy nor social detail nor real people.

Another annoying feature of Iron Council is that everything is subservient to the special effects of the moment. At one point, for example, we read:

"With a thumb of chalk, Spiral Jacobs drew the shape that had given him his name, whispering while he did, and it was of astonishing perfection, a mathematical symbol. And then there were smaller coils coming from its outer skin, and Jacobs ran his hand over it and walked on.

It began to rain as Ori reached the mark Jacobs had made. It did not smear."

But though Ori and Jacobs continue to roam the city, the rain never features again -- it's just a completely ad hoc device to highlight the mysteriousness of the spiral symbols. This is a trivial example, but this kind of thing recurs at different levels throughout Iron Council: strange wondrous monsters are invented, new magics deployed, characters introduced and then disposed of, new words coined -- all to help enhance a single encounter, battle, scene, or piece of dialogue.

Mieville's characterisation is weak. The three central characters manage to get less and less interesting as time goes by, to the point where the deaths of two of them are of no moment. The plot and Mieville's dazzling invention hold Iron Council together and kept me reading to the end, but the overall effect is, apart from a few novel ideas, unmemorable and unlikely to bear rereading. It was no doubt unwise of me to expect more, but the fuss about Mieville and the recommendations of friends had raised my hopes.

Note: I haven't read Mieville's earlier books set in the same world -- Perdido Street Station and The Scar -- but Iron Council is entirely self-contained.

You can purchase Iron Council from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "How are brain size and intelligence related to social complexity? What are the evolutionary underpinnings of cooperation? How sophisticated are animal communication and social cognition? And do animals have culture? Read on for my review of Animal Social Complexity: Intelligence, Culture, and Individualized Societies." Animal Social Complexity: Intelligence and Culture author Frans de Waal and Peter Tyack pages 616 pages publisher Harvard University Press rating 9 reviewer Danny Yee ISBN 0674009290 summary 18 papers on primates, cetaceans, other mammals and birds

How are brain size and intelligence related to social complexity? What are the evolutionary underpinnings of cooperation? How sophisticated are animal communication and social cognition? And do animals have culture? These are some of the broad questions addressed by the eighteen papers in Animal Social Complexity, which look not only at primates and cetaceans, but also at hyenas, elephants, bats, and birds. The common focus is on societies that are individualized, with members recognising each other as individuals, and stable, with long-lived members and on-going relationships, and in which there are learned survival skills and social behaviours. Some of the papers are overviews of particular species or taxa, some address specific questions in the context of a particular species, and some present cross-species comparisons.

Consisting of the papers from a conference held in 2000, Animal Social Complexity is a professional volume, complete with a hundred pages of references. But the topics covered are of widespread interest, and the multi- and inter-disciplinary nature of the papers makes them mostly accessible to the lay reader.

Carel Van Schaik and Robert Deaner present a life history perspective on cognitive evolution: demonstrating a link between social complexity and intelligence/brain size is complicated because both are correlated with long life spans. Randall Wells presents an outline of dolphin social complexity based on long-term studies on the communities in Sarasota Bay, Florida. And Katy Payne gives an overview of social complexity in the three elephant species.

Christophe Boesch describes examples of complex cooperation among Tai chimpanzees, in group hunts for monkeys and in territorial conflict with other chimpanzee groups. Christine Drea and Laurence Frank describe the social system of spotted hyenas and argue that more attention should be paid to social complexity in carnivores. It has commonly been argued that social stress is a consequence of subordination; Scott Creel and Jennifer Sands present evidence suggesting that it may in fact be a cost of domination, at least in some species.

Three of the papers debate the underlying mechanisms of social cognition. Ronald Schusterman et al. argue for equivalence classifications as a basic structure. In contrast, Robert Seyfarth and Dorothy Cheney argue that "nonhuman primates are innately predisposed to group other individuals into hierarchical classes". And for Frans de Waal the conditionality of behaviour suggests a role for if-then structures in primate "social syntax".

Taking a comparative approach to laughter and smiling in primates, Jan Van Hoof and Signe Preuschoft find that "laughter has evolved in the context of joyful play, and that the broad smile has evolved as an expression of nonhostility and friendliness, taking its origin in the expression of fearful submission". Looking at vocal learning in four parrot species from Costa Rica, Jack Bradbury suggests that in "ecology, social organization, and vocal communication, parrots appear to be more convergent with dolphins than they are with other birds".

Gerald Wilkinson looks to bats for an independent test of the Machiavellian Intelligence hypothesis, probing the relationships between brain size, vocal complexity, and colony size. And Peter Tyack explores bottlenose dolphins' use of signature whistles in communicating social relationships.

Following in the footsteps of Imanishi, pioneer of Japanese primatology, Tetsuro Matsuzawa considers, as examples of "culture", sweet potato washing among Koshima monkeys and nut cracking using stone tools by Bossou chimpanzees. Toshisada Nishida describes the "flexibility and individuality of cultural behavior patterns" among chimpanzees at Mahale. And in "Ten Dispatches from the Chimpanzee Culture Wars" William McGrew gives an overview of the arguments between cultural anthropologists, psychologists, and primatologists (among others) over chimpanzee culture -- and over the definition of culture.

Hal Whitehead looks at sperm whales, the cetacean culture debate more generally, and the possible effects of "cultural hitchhiking" on genetic diversity. And Meredith West et al. find a critical role for social interaction in learning and development in cowbirds and starlings.

In addition to the eighteen papers, there are a dozen shorter "case studies" which tackle narrower questions. Animal Social Complexity is an important contribution to the scientific literature. And it has a wealth of material for anyone fascinated by social animals and not intimidated by scientific methodology, a little bit of statistics, references and scholarly language.

Danny Yee has written over 700 book reviews. You can purchase Animal Social Complexity: Intelligence and Culture from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "The Visual Display of Quantitative Information is a recognised classic on statistical graphics; to the 1983 original, this 2001 edition adds some additional graphics, extra colour, and corrections. It is a broad-ranging work, covering history, theory and practice and, despite the formal title and scholarly references, not at all narrowly academic. It assumes only a very basic understanding of statistics." Read on for the rest of Danny's review. The Visual Display of Quantitative Information author Edward R. Tufte pages 197 publisher Graphics Press 2001 rating 10 reviewer Danny Yee ISBN 0961392142 summary the classic work on statistical graphics

Tufte begins with the different kinds of informational graphics (maps, time-series, narratives, and relational graphics), describing their origins and evolution and presenting examples of excellence in their design. Many of these are fascinating in their own right -- two that I particularly appreciated were Minard's depiction of Napoleon's disastrous retreat from Moscow and an 11th century map of China.

"For many people the first word that comes to mind when they think about statistical charts is 'lie.'" Tufte gives examples of different kinds of deceit in graphics, along with some principles for maintaining graphical integrity. He goes on to consider the reasons for the poor quality of many informational graphics: one is the relegation of their design to those with art training but without an understanding of either the substance of the material or of quantitative (statistical) methods.

Part two begins by introducing some terminology and theory for describing graphics. The principle "Above all else show the data" is formalised as maximization of the data-ink ratio, and illustrated with some "before and after" examples of erasure of redundant or non-data-ink. Tufte excoriates various kinds of "chartjunk": moire vibration (the disconcerting effect caused by repeating patterns), the overuse of grids, and the "ducks" created when the design takes precedence over everything else.

Tufte gives specific suggestions for the design of box plots, bar charts, and scattergraphs. He argues for the use of multifunctioning graphical elements -- building data measures or grids out of the data itself, for example, by using labels that also show the end points of the data ranges. And he looks at ways of maximizing data density (within reason) and using "small multiples," or repeated smaller graphics. A final chapter steps back to consider the balance between text, text-tables, tables, semi-graphics, and graphics -- "Given their low data-density and failure to order numbers along a visual dimension, pie charts should never be used" -- and to touch on the aesthetics of proportion and scale.

All of this is liberally illustrated with examples, drawn from across the natural and social sciences. Despite the space devoted to these, The Visual Display of Quantitative Information packs a lot in, avoiding repetition or verbosity. Tufte's own tables and graphs are appropriately effective and the volume as a whole is elegantly put together: though it's more than that, it could be appreciated simply as a work of art. Tufte also finds room to survey publication practices across a select sample of international newspapers and journals, comparing the data density of graphics and the proportion of relational graphics (involving at least two variables that aren't temporal or spatial).

Most obviously, The Visual Display of Quantitative Information should be read by those involved in writing, editing, or designing documents or displays that contain statistical graphics -- from professional editors, technical writers, academics, and journalists right down to high school students. But others may appreciate it too: it has changed the way I look at informational graphics.

Danny has written over 700 book reviews. You can purchase The Visual Display of Quantitative Information from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the (recently updated) book review guidelines, then visit the submission page.

danny writes "Having problems with your sex life? Read on for my review of Dr Tatiana's Sex Advice to All Creation -- it may not get you laid, but you can have some fun learning about the evolutionary biology and natural history of sex." With that disclaimer in mind, read on for the rest. Dr. Tatiana's Sex Advice to All Creation author Olivia Judson pages 308 publisher Vintage rating 9 reviewer Danny Yee ISBN 0099283751 summary the evolutionary biology of sex

Dr. Tatiana's Sex Advice to All Creation mimics a write-in advice column, in which anthropomorphised animals of all kinds ask for help with their sex lives. That is just the framework, however, for an entertaining tour of the natural history and evolutionary biology of sex. Pretty much every aspect of animal sex is at least touched on, though the "all creation" of the title is an exaggeration -- there's only the occasional reference to plants and bacteria, with nothing (for example) on the fascinating topic of pollination.

The columns are grouped thematically in thirteen chapters, divided into three parts. Part one covers the "expenses" involved in sex, female promiscuity, conflicts between males, and alternative strategies for those who are poor and small. Part two covers sex and cannibalism, sex and violence (male and female), love potions and homosexuality, and monogamy. And part three looks at incest, at hermaphroditism, facultative sex and other variants, and at asexuality and theories for the evolution and persistence of sex.

Each column typically runs to four or five pages, beginning with a question.

Dear Dr. Tatiana,

I'm an Australian redback spider, and I'm a failure. I said to my darling, "Take, eat, this is my body," and I vaulted into her jaws. But she spat me out and told me to get lost. Why did she spurn the ultimate sacrifice?

Dr. Tatiana never answers directly, but looks around first at other species with similar or related problems

"... most guys prefer not to be eaten at all. ... In the scorpion Paruroctonus mesaensis, the male whacks his partner several times before racing off; in the wolf spider Lycosa rabida, the male tosses his lover in the air, leaving her in a crumpled heap as he hurries away.

... In the bristle worm Nereis caudata, something similar goes on but for once it's the man who eats his wife.

... Do other males eat their mates? I have never heard of it. But note: this is not to say males don't eat females. They do. Just not during sex. Platonic cannibalism is a problem for creatures from apes to amoebae. It's depraved out there."

and sets the question in a broader context

"... It goes without saying that such a death wish can evolve only in special circumstances. That is, being eaten must mean you leave more offspring than if you are spared. So far, your species is the only one known to meet this criterion. A male redback who gets himself munched fertilizes more eggs than a male who survives. Why? ... it turns out that sex takes longer when she's chewing away on you, which gives you the chance to deliver more sperm and thus fertilize more eggs. So your challenge is to make yourself more appetizing."

before finishing with the answer, if there is one.

"The secret is picking your moment. Female redbacks aren't greedy; when they're not hungry, they don't eat. If you offer yourself right after she's feasted, forget it. You've got to wait until she gets that mean and hungry look in all eight of her beady little eyes. And then, for what you are about to receive, may your kiddies be truly thankful."

Links to many different areas of biology are explored.

"Lysin, the protein that determines whether an abalone sperm can enter an abalone egg, is evolving at record speed. Tantalizingly, abalone are also splitting into new species at a startling rate."

And for those who want to follow up specific topics in the technical literature, there are thirty pages of notes, giving annotated references for each column, with pointers into a forty page bibliography. (Though a short recommended reading list of non-technical popular works on evolution would have been a more useful inclusion for most readers.)

Sex Advice to All Creation assumes no background in biology, and there's the occasional wordy or repetitive explanation. But even scientists for whom the evolutionary biology is old hat are likely to find some new details in the natural history. The chatty tone and the framing conceit of an advice column -- extended in the last chapter to a mock television show -- remain entertaining and decorative, never pushed so far they become annoying or distort the science.

"If you are not a hermaphrodite, incest is best if you come from a species where males have only one set of genes. If you're not a member of such a species, I urge you to avoid sex with your nearest and dearest."

You can purchase Dr. Tatiana's Sex Advice to All Creation from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "Friends have been recommending Ken MacLeod's science fiction to me for some time, and I've finally read The Cassini Division. Read on for my review - and check out my other science fiction reviews." Nothing says the start of summer like some paperback science fiction. The Cassini Division author Ken MacLeod pages 240 publisher Orbit rating 7 reviewer Danny Yee ISBN 1857237307 summary politics in the 24th century

At the beginning of the 24th century, the inner Solar System is dominated by the socialist Solar Union. Their front-line fighting force, the Cassini Division, defends against viral attacks from post-human Jovians and keeps careful watch on a wormhole. Ellen May Ngwethu, a member of the Division's Central Committee, travels to areas of Earth occupied by "non-cos", low-tech anarchists who still use such antiquated devices as money. Her goal is to find the physicist Malley, whose help is necessary to find a way through the wormhole. And after taking the losing side in a debate over whether to bomb the Jovians or to try to communicate with them, Ellen travels through the wormhole to ultra-capitalist New Mars.

After a slower opening, there largely to link back to earlier books set in the same universe, The Cassini Division rattles along at a good pace. It is not particularly compelling as a novel, however, with no characters that really come to life. Ellen has centre-stage throughout but remains something of a cipher, her dominant feature her dedication to "the true knowledge" on which the Solar Union was founded ("self interest") and her hostility to non-humans, both rooted in her personal history. And none of the other characters gets much play at all. Suze, for example, is a sociologist who joins Ellen early on in the story and has as high a profile in it as anyone else, but she could still have been trivially edited out.

The science is "space opera" style, deployed when necessary for the plot but otherwise passed over, and the intellectual interest comes from the politics. This takes the form of open discussions of political theory and depictions of different forms of social organisation in action, but it never becomes didactic or stodgy. MacLeod himself is a Trotskyist libertarian, a label which gives some feel for his eclecticism, and he depicts very different political systems working reasonably well -- though he often verges on parody. There are also plenty of little jokes, such as a statue of Mises in the Central Planning Committee building.

A significant factor is that aging has been stopped, so many people are centuries old and have political views formed in the 21st century. This makes the recurrence of current political ideologies three centuries down the road more plausible, but it is also a key stabilising factor. Whether in non-co areas of Earth, in the Solar Union, or on New Mars, to a great extent the system works because it's what people are accustomed to. And even the Jovian "fast folk", descendants of humans who moved into computers and experienced a kind of singularity, have some continuity with their past.

Overall? There's not much more to it, but The Cassini Division makes a decently entertaining action story, with plenty of ideas for anyone interested in political theory. I'm not going to rush off and buy Ken MacLeod's other books, but I'll keep an eye out for a chance to borrow them or scam review copies.

You can purchase the The Cassini Division from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "From Airline Reservations to Sonic the Hedgehog is a history of the United States' software industry, down to 1995. Read on for my review." From Airline Reservations to Sonic the Hedgehog author Martin Campbell-Kelly pages 372 publisher The MIT Press rating 8 reviewer Danny Yee ISBN 0262033038 summary A History of the U.S. Software Industry

From Airline Reservations to Sonic the Hedgehog is a history of the software industry in the United States, down to 1995. It avoids technical details -- there's little about software engineering and programming languages, for example, or developments in computer science -- to focus on the economic and business accompaniments of technological change. And Campbell-Kelly is an academic historian, providing full references and a discussion of sources and avoiding hype or dramatisation. But From Airline Reservations is never heavy going: the less interesting tables can easily be skipped over, the references are out of the way as endnotes, and short, focused case studies make for compelling reading.

An introduction discusses industry statistics, other sources, and the restriction to the United States. The basic structure is then chronological and sectoral, with a three sector division into software contracting, corporate software products, and mass-market software products.

Two chapters cover software contracting. In the 1950s, IBM's Technical Computing Bureau and SHARE user groups were important players and FORTRAN and COBOL were developed. The Systems Development Corporation, set up to produce software for the national defense network (SAGE) required thousands of programmers and became a kind of "programming university," while the SABRE airline reservations system was the most important civilian project. As well as large systems integrators there were small software contractors, some of which were to grow rapidly.

The 1960s saw consolidation, with an increasing need for marketing and project management skills as well as casualties from a computer "utility" fad (early Application Service Providers) and the computer stocks crash of 1970. New firms continually appeared, however, with high turnover. Coverage of software contracting stops there, with a closing comment that: "Software contracting remains the most popular way of participating in the software industry, programming services enterprises outnumbering software products firms by 2 or 3 to 1."

There are three chapters on the software products industry. The first covers its origins between 1965 and 1970, with extended case studies of two leading products: ADR's Autoflow (flow-charting) and Informatics' Mark IV (file management). The significance of IBM's 1969 unbundling of hardware and software is also treated at length.

Next comes a survey of software products through the 1970s. These were classified by supplier (computer manufacturers and independent vendors, with some turnkey vendors, software brokers, and time-sharing services) and by category. The latter included systems (database systems, IBM's CICS, Unix) industry-specific (banking, manufacturing), and cross-industry (accounting, office automation, CAD) software. Campbell-Kelly suggests that the increasingly fine classification of software was itself significant.

The period from 1980 to 1995 saw "the United States' lead in software products become seemingly invincible." This is illustrated with case studies of IBM (a manufacturer) and three big independent vendors: Computer Associates (a consolidator), Oracle (databases), and SAP (ERP software). One reason for the success of the latter, a German company, was that European companies lagged those in the United States and had not yet invested in company-specific software.

Then come three chapters on the personal computer software industry. The first covers the pioneer period from 1975 to 1983, beginning with the origins of the microcomputer and the "first mover" advantage in operating systems held by Digital Research and then Microsoft. Also covered are programming languages and VisiCalc and other productivity software packages. In production and distribution "there was almost no point of contact between the booming microcomputer software industry and [that] for corporate mainframes and minicomputers."

The second chapter continues the story down to 1995. Much of this involves Microsoft, of course, but the chapter title is "Not Only Microsoft" and Campbell-Kelly argues that it has received disproportionate attention. Topics covered include the IBM PC standard, Autodesk and AutoCAD, the race for a GUI, battles between Lotus 1-2-3 and Excel and between WordPerfect and Microsoft Word, Adobe, and others. Success in the PC software industry came not just from luck, but from exploitation, deliberate or not, of the economics of increasing returns.

A third chapter looks at home and recreational software, in particular at games (and game consoles), CD-ROM encyclopedias, and personal finance software (Quicken versus Microsoft Money). Here Campbell-Kelly sees "a historical trend for software to become subordinate to the intellectual content or the complementary services offered".

Campbell-Kelly himself is British and there are occasional references to British and European companies, but the focus is on the United States. A final chapter looks at reasons for the success of the U.S. software industry: an early start and market size, clustering effects, and government support for R&D.

On "political" issues, Campbell-Kelly takes a more positive view of Microsoft than some: "Microsoft's monopolies and abuses do not seem any worse than some of the others described in this book." He also ignores free software completely, which is perhaps reasonable given the end-point in 1995, though the GNU Project and its antecedents would have made a interesting topic -- and hindsight suggests that the idea of free software was more significant than any specific product.

From Airline Reservations to Sonic the Hedgehog should command a wide audience: participants in the industry, both programmers and managers, students of economics and business, and the interested general public.

Danny's book reviews cover many other business, computing, and economic history titles. You can purchase Airline Reservations to Sonic the Hedgehog from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

Tonight's Slashback arrives with updates on disappeared Intel contractor Mike Hawash, free Baen books, a new link for comparing space ship sizes, and more. Read on below for the details.

Yes, charges are nice after six weeks of unexplained incarceration. purdue_thor writes "The various news agencies (CNN, FoxNews) are reporting that after being held for six weeks, software engineer Mike Hawash has finally been charged. His detainment as a material witness and subsequent incarceration without formal charges was discussed previously on /. Friends of Mike Hawash have created a website to publicize his case and have released a statement regarding the charges."

Randolpho adds "The Free Mike Hawash website has released the following affidavit (PDF file) received from the Federal Terrorism Task Force. The affidavit states that Hawash traveled to China in 2001 with several co-conspirators 'in an attempt to enter Afghanistan to fight against United States forces.'"

This just in from the cork-topped bottle. danny writes "One of the disadvantages of living in Australia is that my review copies arrive late. But my review of Google Hacks may be of interest, even after honestpuck's earlier review."

Free as in books. Author John F.X. Sundman writes: "PDFs of the complete Acts of the Apostles and Cheap Complex Devices are available for free download from wetmachine.com under the Creative Commons license."

And Robotech_Master writes "Remember the Honor Harrington CD-ROM, which Baen packaged with its most recent Honor Harrington book? The one that included over three dozen e-books and came with explicit permission to copy and share but not sell?

Well, Baen's done it again. The new CD comes with the fourth book in John Ringo's Aldenata trilogy, Hell's Faire . It includes still more free e-books, mp3s, and even a D20 Aldenata roleplaying game in electronic form. The book hits the stands this month, and the ISO is already available on-line. (Scarywater guy, please take note. :) Download it, burn it, give it to your friends...or buy the book and support one of the most Internet-clueful publishers out there today."

Free as in "you pay money." An anonymous reader submits "The original Douglas Adams Hitchhikers Guide to the Galaxy, was first a book, then a radio series. Adams edited both. All 7 hrs and 30 minutes of the Radio series have been released by the BBC in MP3 CD format. If you only caught the TV series this is a must."

I wish more audio books would arrive like this (compressed, so as to occupy fewer disks), though I'd choose a better method of audio compression ;) If you want to hear the HHGttG, though, a few minutes on Google will probably turn up some fan sites with recordings from the BBC broadcasts. (innocent whistling)

Yeah, but there's no Epcot Center. Sacarino writes "Las Vegas is *almost* on par with Disney now. The regularly-updated Monorail Society website has tons of pictures of the progress. Vegas' monorails are the same type as Disney's (Bombardier Mark VI), only with inwardly opening doors... slick! Also mentions the old MGM-Bally's monorail that's getting absorbed into the new automated network."

Is this what Microsoft thinks of viral licensing? Vagary writes "One of my friends just got a Microsoft router and asked me to check the security features for it. The ping denial doesn't work, which is good because a port scan found some pretty interesting things, including this string in the TCP/IP fingerprint: 'i586-pc-linux-gnu'. Does that mean Microsoft must provide Linux source to purchasers of this product?"

Can anyone confirm, deny or explain this interesting claim?

Click here to discuss the size of a fictional spacecraft ... photozz writes "The infamously slashdotted site comparing the relative sizes of several hundred starships from various Sci-Fi series has been mirrored to a somewhat more robust server. So cool. It's in draggable format, so you can put King Kong on top of Deep Space 9 and re-create a dream I had last night......."

danny writes "Kenneth McNamara's Shapes of Time is a popular study of the role of growth and development in evolution, following in the footsteps of Stephen Jay Gould's influential Ontogeny and Phylogeny. Read on for my review of Shapes of Time." Shapes of Time: the Evolution of Growth and Development author Kenneth J. McNamara pages 342 publisher John Hopkins University Press rating 9 reviewer Danny Yee ISBN 0801855713 summary evolutionary changes in the timing of developmental features and in rates of growth

Many popular books on evolution ignore or downplay the role of growth and development, of ontogeny. But in Shapes of Time Kenneth McNamara's focus is on heterochrony, on evolutionary changes in the timing of developmental features and in rates of growth. As he puts it:

"evolution is not only about genetics and natural selection. Just as crucial are the changes in the timing and rate of development, with the three, genetics, heterochrony, and natural selection, forming an interdependent evolutionary triumvirate."

Heterochrony constrains natural selection; it also provides it with raw material, allowing small genetic changes to have big phenotypic effects.

Ideas about the relationship between ontogeny and phylogeny (evolutionary history) have changed over the last few centuries, with notions of recapitulation and paedomorphosis going in and out of fashion. McNamara's outline of this covers Ernst Haeckel, Karl Ernst von Baer, and Walter Garstang, ending with Stephen Jay Gould, from whose Ontogeny and Phylogeny he takes the terminology for different kinds of heterochrony. The basic division is into paedomorphosis (less growth) and peramorphosis (more growth). These can each take three forms: paedomorphosis can be the result of progenesis (finishing early), neoteny (slower growth rate), and postdisplacement (starting late), while peramorphosis can result from predisplacement (starting early), acceleration (greater growth rate), and hypermorphosis (finishing late).

That's a lot of technical terms, but don't let them scare you away - the bulk of Shapes of Time consists of lively and engaging examples of heterochrony, taken from across the animal kingdom, from dogs and humans to invertebrates (McNamara is an invertebrate paleontologist), which help both to explain those terms and to fix them in the memory. But first McNamara presents a little bit of developmental biology, covering the stages of neofertilization, differentiation and growth, touching on Hox genes and morphogens, and mechanisms of organ and appendage formation. This is enough background for the higher level (zoological and ecological and paleontological) survey that follows, but may be frustratingly slender for those after more, after a better understanding of the developmental biology behind heterochrony.

McNamara begins his tour of heterochrony with dog varieties - even looking at paedomorphosis in depictions of Snoopy in Peanuts cartoons - and examples from insects and salamanders. Heterochrony is "all-pervasive" in the generation of sexual dimorphism, from simple size differences to extreme cases with males that are little more than "parasitic" sperm sacs. And heterochrony can play a key role in speciation, often combining with environmental gradients to separate populations; examples include Darwin's finches, brachiopods, and bushbucks.

Are some forms of heterochrony more common than others in particular lineages? In some cases paedomorphism seems unusually common, notably among the amphibians (axolotls are paedomorphic salamanders, for example); McNamara also looks at paedomorphism in lungfish, cats, and various invertebrates and at connections with genome and cell size. In other cases peramorphosis seems to dominate: a dramatic example is the combination of hypermorphosis and acceleration that produced increasing size in dinosaur lineages, but Cope's rule suggests that size tends to increase more generally. More common is the mixing of peramorphism and paedomorphism, acting on different features and subject to "trade-offs": examples here come from the evolution of wings (and of flightlessness) and tetrapod limbs, with a brief glance at the origin of turtle shells.

Heterochronic mechanisms enable the adaptation of life cycles to different environments: hypermorphosis and neoteny are more common in stable environments ("K-selected") and progenesis and acceleration in unpredictable ones ("r-selected"). Heterochronic changes can be driven by biological "arms-races", with a clear example in the evolution of sea urchins in response to predation by cassids (marine snails). And heterochrony has played a key role in human evolution, where McNamara highlights peramorphic features against a tradition which has stressed paedomorphism.

McNamara sometimes appears to reduce the significance of ontogeny in evolution to heterochrony, when it is actually considerably broader. There are ontogenetic constraints and processes other than those of timing and rate: biophysical and biochemical limits, ways in which novel proteins or cell types arise, and self-assembly and exploration allowing "adaptive" development, to list just a few. If there is a "triumvirate" that rules evolution it has to be "genetics, ontogeny, and natural selection". Still, there's no doubting that heterochrony is one of the key links between ontogeny and phylogeny - at least not after reading Shapes of Time.

You might like to check out Danny's other evolution, developmental biology, and popular science reviews. You can purchase Shapes of Time from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

danny writes "Leading Spanish paleontologist Juan Luis Arsuaga has written a popular book on the Neanderthals, translated as The Neanderthal's Necklace: In Search of the First Thinkers. Read on for my review." The Neanderthal's Necklace author Juan Luis Arsuaga pages 334 publisher Four Walls and Eight Windows rating 9 reviewer Danny Yee ISBN 1568581874 summary a nice introduction to the Neanderthals

The Neanderthal's Necklace is an engrossing and informative introduction to the Neanderthals, setting them in the context of human evolution and prehistory more generally, and of broader ecological and environmental history. In it Luis Arsuaga touches on anatomy, demographics, systematics, evolutionary psychology, philosophy of mind, and more, but he does so sensibly, not trying to cram in too much and not getting distracted from his basic subject. He does focus on Spain and to a lesser extent on his own digs - he is one of Europe's leading paleoanthropologists - but while his passion for his subject is clear, The Neanderthal's Necklace never becomes autobiographical.

The first two chapters are an account of early human prehistory: the other apes, the various species of Australopithecus and Homo, early toolmaking, and so forth. This includes a brief introduction to systematics. Chapter three continues this with an account of the evolution of the Neanderthals in Europe and our ancestors in Africa, and an overview of their comparative anatomy and morphology.

Two chapters describe the environment in which this happened, presenting a history of the flora, fauna, geology and climate of Spain (and in less detail of Europe) over the last few hundred thousand years. Here Luis Arsuaga brings to life the mountains and forests of Spain, and the cave bears, mammoths, reindeer, and other animals that inhabited them. With bears and hibernation as the link, he goes on to consider the problem of finding enough to eat in this environment, especially in glacial periods. He looks at foraging and hunting (or scavenging) as sources of food, at the development of hunting technology, and at the extinction of many species. A chapter on demographics and life histories then explains how the archaeological record is used to estimate population densities, life expectancies, and so forth for both Neanderthals and Cro-Magnons.

Luis Arsuaga includes just a little bit of abstract philosophy of mind in an overview of debates over consciousness, sentience, language, and their evolutionary origins; he argues that Neanderthals had language and self-awareness, but lacked our more advanced symbolic abilities and vocal anatomy; evidence for "funerals" or other ritual behaviours is not conclusive. And he reconstructs the contact between Neanderthal and Cro-Magnon, with the latter's superior tools and social organisation giving them an edge in the last glaciation, and the last Neanderthals living in southern Spain. A brief final chapter recapitulates the story and glances at what came next, at agriculture and domestication.

Only a few rough sketches, graphs and maps are included in The Neanderthal's Necklace: a decent map of Spain is probably the major omission for non-Spanish readers. The publisher of this translation has, rather annoyingly, converted all the units from metric to Imperial, though the subject is surely scientific enough to warrant having left them. And a digression explaining the "grandmother" theory of menopause seems awkwardly "tacked on". Otherwise, there is not much to fault - this is a superb piece of popular science, one that does justice to its fascinating subject.

If you enjoyed this review, you might like to check out Danny's other paleoanthropology and popular science reviews. You can purchase The Neanderthal's Necklace from bn.com. Slashdot welcomes readers' book reviews -- to see your own review here, read the book review guidelines, then visit the submission page.

If you administer remote systems, check your email from the road, or just have a sense of paranoia about your home network, you're probably somewhat familiar with SSH. If you need to know more, though, danny writes "SSH, The Secure Shell will be another 'must have' O'Reilly volume for many system administrators. Read on for my full review." SSH, The Secure Shell author Daniel J. Barrett, Richard E. Silverman pages 540 publisher O'Reilly & Associates rating 8 reviewer Danny Yee ISBN 0-596-00011-1 summary Comprehensive look at the ubiquitous SSH protocol, from installation to advanced uses.

A comprehensive study of what is now a key part of many network systems, SSH, The Secure Shell is a valuable resource for system administrators and users. Its explanations are clear and thorough: I'm not sure about the "definitive" claim, but Barrett and Silverman do go into considerable detail, often to the limits of "if you want to play with this you really ought to look at the source code." Perhaps most importantly, The Secure Shell is organised so one can easily skip unwanted detail and find just those portions that are relevant. As a result, it can be used in different ways -- read through to learn about ssh and what it can be used for, or just consulted as necessary to answer particular questions or solve particular problems.

Chapter one puts ssh in context, looking at its history and related technologies, and chapter two introduces basic client operation. Anyone who uses ssh and scp as simple telnet and ftp replacements and isn't curious about how they work can stop reading here -- and doesn't really need their own copy of The Secure Shell. Chapter three is an "under the covers" look at ssh. After a three-page introduction to cryptography (not really suitable for the reader with absolutely no background), it explains the ssh1 protocol and then how ssh2 differs from that and the extra features it offers. There is also a brief overview of the cryptographic algorithms commonly used in ssh implementations, and an explanation what ssh secures and what it doesn't.

The rest of the book is more implementation-specific: the primary implementations covered are SSH, SSH2, and OpenSSH. Being a lazy user of packages, I skipped chapter four, on installation and compile-time configuration. Chapter five is a guide to server configuration, working systematically through the sshd configuration file options.

The next four chapters are aimed at power users, covering client use in much greater depth. Chapter six explains key management: what identities are, how to create them, how to manage them with ssh agents, and how they can be used (to automate logons, most obviously, but fancy things can be done with multiple identities). Chapter seven goes through client configuration in detail, working through the configuration file options, chapter eight covers account configuration on the server-side (including forced commands), and chapter nine looks at port and X11 forwarding.

For those overwhelmed by all of this, chapter ten describes a sample "recommended setup" for everything from compilation to client configuration. Chapter eleven covers some special topics -- unattended SSH, FTP forwarding, mail over SSH, Kerberos, using SSH through a gateway host -- and chapter twelve is a troubleshooting FAQ.

Chapter thirteen is an overview of other implementations, with a table of products, and four short chapters then cover specific Windows and Mac clients. Of the three Windows clients covered here, two are proprietary and the third is only distributed as a bzipped tar file: it would have been good to have a chapter on one of the free and more user-friendly Windows clients, perhaps PuTTY or TTSSH, both of which get a "recommended" tag in the table of products.

You might want to purchase SSH, The Secure Shell from Barnes and Noble or read some of Danny's 600+ other book reviews. Want to be a famous book reviewer? You can read your own book reviews in this space by submitting your reviews after reading the book review guidelines.

danny writes: "'Free as in Freedom: Richard Stallman's Crusade for Free Software' is an insightful biography of a figure whose mere name tends to start flame wars on Slashdot ..." Stallman may be one of the most interesting people alive right now: read on to see how well the biography is up to the task of describing him and his movement -- acccording to Danny, that may depend on the reader. Free as in Freedom: Richard Stallman's Crusade author Sam Williams pages 225 publisher O'Reilly rating 9 reviewer Danny Yee ISBN 0-596-00287-4 summary Life of Stallman

Free as in Freedom is a generally sympathetic but far from hagiographic biography of Richard Stallman, inspiration of the free software movement. While much of the material in it will be familiar to anyone actively involved with free software, there are, as Williams claims, "facts and quotes in here that one won't find in any Slashdot story or Google search." It is also an entertaining and accessible study, which I finished within a day of my review copy arriving.

Williams begins with the famous jamming printer and Stallman's encounter with a non-disclosure agreement that prevented him writing reporting software for it. He then jumps forwards to a speech given by Stallman in 2001, responding to attacks by Microsoft on the GNU GPL. Having used these episodes to introduce Stallman and explain the basic idea of free software, the rest of the work continues in a similar vein, mixing historical chapters with ones describing Williams' own meetings with Stallman.

Chapter three describes Stallman's childhood as a prodigy; chapter four his experiences at Harvard and MIT; chapter six the MIT AI Lab and the Emacs "commune"; chapter seven the death of the MIT hacker community and the first announcement of the GNU Project; chapter nine the GNU GPL; chapter ten the appearance of Linux and debates over GNU/Linux; and chapter eleven the coining of the term "open source" and the arguments over that. These contain quotes by everyone from Stallman's mother to the leading lights of free software, as well as plenty by Stallman himself. The narrative never strays too far from its subject, but becomes inextricably interwoven with the broader history and politics of free software and sometimes digresses to cover key figures and events with which Stallman wasn't directly involved.

Williams' first-hand accounts help give Stallman a human face: chapter five recounts a meeting in 1999 LinuxWorld, chapter eight a meeting in Hawaii, and chapter twelve a frustrating car trip with Stallman at the wheel. These give a feel for Stallman's personality and presence, his forthrightness and emotional intensity, his steadfastness and his abrasiveness, and his ability to unsettle. Chapter thirteen attempts to predict Stallman's status "in 100 years," quoting opinions from from Eben Moglen, John Gilmore, Eric Raymond, and Lawrence Lessig; it also suggests that Stallman's personality may be inseparable from his achievements.

Although I was already involved with free software advocacy, my first encounter with Richard Stallman came when he turned up to a rehearsal of my gamelan group; afterwards I tried without much success to explain to my fellow musicians just how important the strange bearded man they'd just met was. I don't think Free as in Freedom would help much with that: it jumps around too much and assumes too much general knowledge of the computer industry to be a good introduction for complete outsiders. Those already interested in the history and politics of free software and hacker culture, however, should relish it.

In an epilogue Williams talks about the writing of Free as in Freedom and the choice of copyright license. Despite the big fuss made about it being released under the GNU Free Documentation License, however, only a sample chapter is available online now and the rest will not, apparently, be put online until June. (This is not a violation of the OFDL, because Williams as copyright holder can allow O'Reilly to distribute the book in any way they like.) So if you don't want to buy a printed copy, you can either wait three months or hope someone OCRs the book sooner.

You can purchase Free as in Freedom from Barnes & Noble, read chapter three online, or check out Danny's 600 other book reviews. Want to see your own review here? Just read the book review guidelines, then use Slashdot's handy submission form.

danny writes: "'Free as in Freedom: Richard Stallman's Crusade for Free Software' is an insightful biography of a figure whose mere name tends to start flame wars on Slashdot ..." Stallman may be one of the most interesting people alive right now: read on to see how well the biography is up to the task of describing him and his movement -- acccording to Danny, that may depend on the reader. Free as in Freedom: Richard Stallman's Crusade author Sam Williams pages 225 publisher O'Reilly rating 9 reviewer Danny Yee ISBN 0-596-00287-4 summary Life of Stallman

Free as in Freedom is a generally sympathetic but far from hagiographic biography of Richard Stallman, inspiration of the free software movement. While much of the material in it will be familiar to anyone actively involved with free software, there are, as Williams claims, "facts and quotes in here that one won't find in any Slashdot story or Google search." It is also an entertaining and accessible study, which I finished within a day of my review copy arriving.

Williams begins with the famous jamming printer and Stallman's encounter with a non-disclosure agreement that prevented him writing reporting software for it. He then jumps forwards to a speech given by Stallman in 2001, responding to attacks by Microsoft on the GNU GPL. Having used these episodes to introduce Stallman and explain the basic idea of free software, the rest of the work continues in a similar vein, mixing historical chapters with ones describing Williams' own meetings with Stallman.

Chapter three describes Stallman's childhood as a prodigy; chapter four his experiences at Harvard and MIT; chapter six the MIT AI Lab and the Emacs "commune"; chapter seven the death of the MIT hacker community and the first announcement of the GNU Project; chapter nine the GNU GPL; chapter ten the appearance of Linux and debates over GNU/Linux; and chapter eleven the coining of the term "open source" and the arguments over that. These contain quotes by everyone from Stallman's mother to the leading lights of free software, as well as plenty by Stallman himself. The narrative never strays too far from its subject, but becomes inextricably interwoven with the broader history and politics of free software and sometimes digresses to cover key figures and events with which Stallman wasn't directly involved.

Williams' first-hand accounts help give Stallman a human face: chapter five recounts a meeting in 1999 LinuxWorld, chapter eight a meeting in Hawaii, and chapter twelve a frustrating car trip with Stallman at the wheel. These give a feel for Stallman's personality and presence, his forthrightness and emotional intensity, his steadfastness and his abrasiveness, and his ability to unsettle. Chapter thirteen attempts to predict Stallman's status "in 100 years," quoting opinions from from Eben Moglen, John Gilmore, Eric Raymond, and Lawrence Lessig; it also suggests that Stallman's personality may be inseparable from his achievements.

Although I was already involved with free software advocacy, my first encounter with Richard Stallman came when he turned up to a rehearsal of my gamelan group; afterwards I tried without much success to explain to my fellow musicians just how important the strange bearded man they'd just met was. I don't think Free as in Freedom would help much with that: it jumps around too much and assumes too much general knowledge of the computer industry to be a good introduction for complete outsiders. Those already interested in the history and politics of free software and hacker culture, however, should relish it.

In an epilogue Williams talks about the writing of Free as in Freedom and the choice of copyright license. Despite the big fuss made about it being released under the GNU Free Documentation License, however, only a sample chapter is available online now and the rest will not, apparently, be put online until June. (This is not a violation of the OFDL, because Williams as copyright holder can allow O'Reilly to distribute the book in any way they like.) So if you don't want to buy a printed copy, you can either wait three months or hope someone OCRs the book sooner.

You can purchase Free as in Freedom from Barnes & Noble, read chapter three online, or check out Danny's 600 other book reviews. Want to see your own review here? Just read the book review guidelines, then use Slashdot's handy submission form.

danny writes: "'Free as in Freedom: Richard Stallman's Crusade for Free Software' is an insightful biography of a figure whose mere name tends to start flame wars on Slashdot ..." Stallman may be one of the most interesting people alive right now: read on to see how well the biography is up to the task of describing him and his movement -- acccording to Danny, that may depend on the reader. Free as in Freedom: Richard Stallman's Crusade author Sam Williams pages 225 publisher O'Reilly rating 9 reviewer Danny Yee ISBN 0-596-00287-4 summary Life of Stallman

Free as in Freedom is a generally sympathetic but far from hagiographic biography of Richard Stallman, inspiration of the free software movement. While much of the material in it will be familiar to anyone actively involved with free software, there are, as Williams claims, "facts and quotes in here that one won't find in any Slashdot story or Google search." It is also an entertaining and accessible study, which I finished within a day of my review copy arriving.

Williams begins with the famous jamming printer and Stallman's encounter with a non-disclosure agreement that prevented him writing reporting software for it. He then jumps forwards to a speech given by Stallman in 2001, responding to attacks by Microsoft on the GNU GPL. Having used these episodes to introduce Stallman and explain the basic idea of free software, the rest of the work continues in a similar vein, mixing historical chapters with ones describing Williams' own meetings with Stallman.

Chapter three describes Stallman's childhood as a prodigy; chapter four his experiences at Harvard and MIT; chapter six the MIT AI Lab and the Emacs "commune"; chapter seven the death of the MIT hacker community and the first announcement of the GNU Project; chapter nine the GNU GPL; chapter ten the appearance of Linux and debates over GNU/Linux; and chapter eleven the coining of the term "open source" and the arguments over that. These contain quotes by everyone from Stallman's mother to the leading lights of free software, as well as plenty by Stallman himself. The narrative never strays too far from its subject, but becomes inextricably interwoven with the broader history and politics of free software and sometimes digresses to cover key figures and events with which Stallman wasn't directly involved.

Williams' first-hand accounts help give Stallman a human face: chapter five recounts a meeting in 1999 LinuxWorld, chapter eight a meeting in Hawaii, and chapter twelve a frustrating car trip with Stallman at the wheel. These give a feel for Stallman's personality and presence, his forthrightness and emotional intensity, his steadfastness and his abrasiveness, and his ability to unsettle. Chapter thirteen attempts to predict Stallman's status "in 100 years," quoting opinions from from Eben Moglen, John Gilmore, Eric Raymond, and Lawrence Lessig; it also suggests that Stallman's personality may be inseparable from his achievements.

Although I was already involved with free software advocacy, my first encounter with Richard Stallman came when he turned up to a rehearsal of my gamelan group; afterwards I tried without much success to explain to my fellow musicians just how important the strange bearded man they'd just met was. I don't think Free as in Freedom would help much with that: it jumps around too much and assumes too much general knowledge of the computer industry to be a good introduction for complete outsiders. Those already interested in the history and politics of free software and hacker culture, however, should relish it.

In an epilogue Williams talks about the writing of Free as in Freedom and the choice of copyright license. Despite the big fuss made about it being released under the GNU Free Documentation License, however, only a sample chapter is available online now and the rest will not, apparently, be put online until June. (This is not a violation of the OFDL, because Williams as copyright holder can allow O'Reilly to distribute the book in any way they like.) So if you don't want to buy a printed copy, you can either wait three months or hope someone OCRs the book sooner.

You can purchase Free as in Freedom from Barnes & Noble, read chapter three online, or check out Danny's 600 other book reviews. Want to see your own review here? Just read the book review guidelines, then use Slashdot's handy submission form.

Slashback brings you updates and amplifications on the SSSCA, the future of RAMBUS and Intel, fragmentation of filesystems, a book reviewer who's been publishing online longer than some slashdot readers have walked erect, and more. Read on for the details.

A screenplay written by Jack Valenti? cc_pirate writes: "Apparently Sen. Fritz Hollings (D - Disney, er - SC) completed his hearings today on how the media needs to have content protection included in computers. Intel and other high tech companies resist and are chastized by Hollings."

Penguins are the new Turtles. Gerein writes "After many months of extreme lobbying, personal attacks, public petitions and surveys, the war over the future OS of the Bundestag (German parliament) is finally over (previous /. stories). As heise reports (in german, use the fish) Linux won't make it to the desktops (they're going with XP) but will take over the 150 servers. The last critical question over the directory service has finally been decided in favor to OpenLDAP instead of Active Directory. It's not the complete victory for Linux, many had hoped for, but it's a start for more Open Source in the German government."

Full disclosure seems like a nice idea. Merlynnus writes: "Yahoo! is running a story, Copy-protected CD makers lose battle, in which Music City Records, Fahrenheit Entertainment and digital rights management company Sunncomm have 'agreed' to stop collecting personal info, and to label copy-protected CDs as defective, er, play-challenged in certain devices. The agreement came as the result of court action by a Cali resident, Karen DeLise, over the Charlie Pride CD, 'Charley Pride: A Tribute to Jim Reeves.' Did that CD really need copy-protecting?"

This should have been transparent. Metrollica writes: "It turns out the transparent aluminium article at Spiegel was misunderstood. Sci-fighter published a correction. The transparent substance was not aluminium but alumina, shorthand for aluminium oxide. Slashdot reported on transparent aluminium here."

Odds are, somebody's written a thesis on it ... and here one is. Whether in response to this Ask Slashdot question or just a lucky guesser, Cine writes: "The standard filesystem benchmarking tools such as Bonnie++, Postmark , Mongo and others all test the optimum case for the block layouting algorithm. But in practice one also is interested to know how a filesystem performs when it is or was heavily used over a longer period (e.g. months and years).So Constantin Loizides has written a Master Thesis about the performance of filesystems under the influence of fragmentation."

Intel-Rambus break not as simple as portrayed. Controlio writes: "Tom's Hardware Guide has posted a clarification regarding the EBN story with the sensational headline, 'Intel to drop support of Rambus in new CPU products'. The article was also posted on Slashdot. Tom reports:

EBN had the sensational headline Intel to drop support of Rambus in new CPU products, but the story goes on to say, "Intel will continue using Direct Rambus memory with its network processors. Also, although not new products, the next iterations of its 850 and 860 chipsets, supporting a 533MHz front-side, will support RDRAM when they arrive, probably in the second half of this year." A little misleading, wouldn't you say? Hard to tell, but you read it for yourself, and make your own call.

Great. More sensational journalism. Maybe someone should submit Jack Robertson's resume to Fox News."

Finally, some congratulations are in order. danny writes (does he ever): "February 28th marks the 10th anniversary of my first book review; there are now over six hundred. I have written an account of ten years writing book reviews, which illustrates something of how online publication has changed over the years."

danny writes: "The New Chemistry is a survey of the science behind many of Slashdot's technology stories - read on for my review. (An older title of related interest is Chemical Evolution: Origin of the Elements, Molecules, and Living Systems )." Read on for the rest of Danny's review. The New Chemistry author Nina Hall, ed. pages 500 publisher Cambridge University Press rating 8.5 reviewer Danny Yee ISBN 0-521-45224-4 summary an overview of modern chemistry and its applications.

The New Chemistry provides an overview of modern chemistry and its applications, with seventeen review articles by specialists. Though commissioned for this volume, these take different approaches and are pitched at different levels: some are quite broadly accessible, while others assume the reader has studied chemistry at university (I found my physics and biology background helped a lot). Apart from multiple explanations of semiconduction, there is little repetition and an immense range of material is covered. The result is a fascinating picture of the science underpinning much modern technology.

The first five articles involve a fair bit of physics. "The Search for New Elements" looks at the synthesis of elements beyond uranium. "Bonding and the Theory of Atoms and Molecules" touches on a mix of theory: chemical bonds, reaction dynamics, simulation of liquids, and mathematical chemistry. "Chemistry in a New Light" and "Novel Energy Sources for Reactions" look at new tools for controlling reactions: lasers, electrosynthesis, microwaves, and ultrasound. And "What, Why and When is a Metal?" explains how the well-known criteria for distinguishing metals and insulators don't always work; this is one of the more accessible chapters, with a good selection of colour illustrations and historical "boxes."

The more "pure chemistry" chapters were the ones I had the most trouble following. These include "The Clothing of Metal Ions: Coordination Chemistry at the Turn of the Millenium," "Surface Chemistry", and "New Roads to Molecular Complexity." Other chapters connect more with biology. "Medicines from Nature" illustrates the search for new medicines through a case study of Erythromycin biosynthesis. "From Pharms to Farms" has two parts, one surveying major drugs and fragrances and the other pesticides. And "The Inorganic Chemistry of Life" is an unusual abstract overview of life from the point of view of an inorganic chemist.

A range of chapters are oriented towards engineering applications; these will be of particular interest to those following new computing technologies. "Supramolecular Chemistry" is an accessible look at the building of structures, at the chemical approach to nanotechnology. "Advanced Materials" focuses on applications to electronics - alternatives to silicon, packaging materials, liquid crystals, plastic batteries, and more - while "Molecular Electronics" focuses on actual circuits, on conductors and switches and molecular computing. "Electrochemical and Photoelectrochemical Energy Conversion" looks in detail at a range of traditional and experimental battery and fuel cell systems, and more briefly at photoelectrochemical cells and photochemical waste disposal.

"Chemistry Far from Equilibrium: Thermodynamics, Order and Chaos" is the most mathematical chapter, presenting some dynamical theory with a few examples. And a final chapter "Chemistry in Society" outlines the contributions of chemistry back to the Industrial Revolution, and urges better research both to avoid environmental problems and to correct popular misconceptions.

Purchase The New Chemistry from FatBrain or check out Danny's 600 other reviews. Want to see your own review here? Just read the book review guidelines, then use Slashdot's handy submission form.

danny writes: "The New Chemistry is a survey of the science behind many of Slashdot's technology stories - read on for my review. (An older title of related interest is Chemical Evolution: Origin of the Elements, Molecules, and Living Systems )." Read on for the rest of Danny's review. The New Chemistry author Nina Hall, ed. pages 500 publisher Cambridge University Press rating 8.5 reviewer Danny Yee ISBN 0-521-45224-4 summary an overview of modern chemistry and its applications.

The New Chemistry provides an overview of modern chemistry and its applications, with seventeen review articles by specialists. Though commissioned for this volume, these take different approaches and are pitched at different levels: some are quite broadly accessible, while others assume the reader has studied chemistry at university (I found my physics and biology background helped a lot). Apart from multiple explanations of semiconduction, there is little repetition and an immense range of material is covered. The result is a fascinating picture of the science underpinning much modern technology.

The first five articles involve a fair bit of physics. "The Search for New Elements" looks at the synthesis of elements beyond uranium. "Bonding and the Theory of Atoms and Molecules" touches on a mix of theory: chemical bonds, reaction dynamics, simulation of liquids, and mathematical chemistry. "Chemistry in a New Light" and "Novel Energy Sources for Reactions" look at new tools for controlling reactions: lasers, electrosynthesis, microwaves, and ultrasound. And "What, Why and When is a Metal?" explains how the well-known criteria for distinguishing metals and insulators don't always work; this is one of the more accessible chapters, with a good selection of colour illustrations and historical "boxes."

The more "pure chemistry" chapters were the ones I had the most trouble following. These include "The Clothing of Metal Ions: Coordination Chemistry at the Turn of the Millenium," "Surface Chemistry", and "New Roads to Molecular Complexity." Other chapters connect more with biology. "Medicines from Nature" illustrates the search for new medicines through a case study of Erythromycin biosynthesis. "From Pharms to Farms" has two parts, one surveying major drugs and fragrances and the other pesticides. And "The Inorganic Chemistry of Life" is an unusual abstract overview of life from the point of view of an inorganic chemist.

A range of chapters are oriented towards engineering applications; these will be of particular interest to those following new computing technologies. "Supramolecular Chemistry" is an accessible look at the building of structures, at the chemical approach to nanotechnology. "Advanced Materials" focuses on applications to electronics - alternatives to silicon, packaging materials, liquid crystals, plastic batteries, and more - while "Molecular Electronics" focuses on actual circuits, on conductors and switches and molecular computing. "Electrochemical and Photoelectrochemical Energy Conversion" looks in detail at a range of traditional and experimental battery and fuel cell systems, and more briefly at photoelectrochemical cells and photochemical waste disposal.

"Chemistry Far from Equilibrium: Thermodynamics, Order and Chaos" is the most mathematical chapter, presenting some dynamical theory with a few examples. And a final chapter "Chemistry in Society" outlines the contributions of chemistry back to the Industrial Revolution, and urges better research both to avoid environmental problems and to correct popular misconceptions.

Purchase The New Chemistry from FatBrain or check out Danny's 600 other reviews. Want to see your own review here? Just read the book review guidelines, then use Slashdot's handy submission form.

Danny Yee writes with the perfect background reading (once you've finished the Tolkein books, of course) before checking out the new LoTR movie: "For something completely different, reviews of The Complete Sagas of Icelanders and Seamus Heaney's Beowulf. Essential background reading for serious Tolkien fanatics! You might also want to check out my other medieval literature reviews." The Complete Sagas of Icelanders author Viar Hreinsson pages 2200+ (5 volumes) publisher Leifur Eiriksson rating 9 reviewer Danny Yee ISBN 9979-9293-0-8 summary stories of Viking Age feuds, battles, legal conflicts, love affairs ...

Beginning in the 9th century, settlers from Norway created in Iceland a society of fiercely independent farmers, fishermen, and traders; in the 13th and 14th centuries their descendants wrote a whole series of stories about them. These family sagas tell of feuds, duels and battles, legal conflicts, love affairs, travels and raids to Norway and the British Isles and further afield, and the attempted settlement of Vinland. The Complete Sagas of Icelanders is the first complete coordinated translation of these into English, containing all forty family sagas and fifty shorter tales.

The focus of the sagas is always on individuals and their relationships. They offer us strong men and outlaws, legal experts and tricksters, poets and warriors serving Norwegian kings, respected leaders and arbitrators -- and powerful matriarchs, faithful wives, and trouble-stirring women. The saga writers never venture directly into the minds of their protagonists, but they produce vivid, distinctive portraits of individuals caught up in memorable events: Egil, imprisoned in York by King Eirik Bloodaxe, with one night to compose a poem to save his life; the final ridge-top stand of the outlawed Gisli; Askel working for peace, to the point of trying to arrange in advance the settlement for his own death; Kormak's life-long obsession with Steingerd; Gunnar turning back from going into exile, moved by the beauty of the landscape; the imperious Gudrun, revealing at the end of her life which of her men she had loved the most; the burning of Njal and his family and the protracted legal and armed struggle to revenge them; and many others.

The sagas draw on local family stories, older myths and legends, and the broader body of medieval literature, along with a good deal of invention and original creation. While some are awkwardly structured, others rework their sources in sophisticated ways and some are literary masterpieces. In some, unity is provided by a biographical focus, sometimes ending with a peaceful death at the end of a long life, sometimes building with tragic inevitability to a climactic killing and the resulting resolution. Others are almost political studies, tracing the shifting balance of power between leading figures in a particular region. And while this genre of sagas is defined by a realistic treatment of early Iceland, many are (or incorporate) comic stories, fantastic tales, and romances.

In their attention to the actions of individuals within social networks, and the working through of their consequences, the Icelandic sagas are important precursors of the modern novel. They directly influenced many writers, among them Walter Scott and J.R.R. Tolkien. The sagas are also a valuable source of information about medieval Iceland, a subject of interest to more than medievalists. One of its notable features is that it had a sophisticated legal system but no executive government, which makes it a magnet for political theorists -- if you search the web for information on medieval Iceland, you'll find a running fight between the libertarians and anarchists over who can best claim it as an exemplum.

Some aspects of the sagas do take a little getting used to. They are episodic, sometimes covering events over several generations and jumping across decades to continue the story of a feud or the history of a region, and they alternate between periods of tension and relaxation. Characters are often introduced with a paragraph or two of genealogical information unrelated to the main story; and the sheer density of names, often shared by several characters, can be confusing. Though they never replace human actions and decisions as explanations of events, elements of foretelling and prophecy are nearly ubiquitous in the sagas. And obviously much of the cultural context is foreign to the modern reader. One soon becomes accustomed to these things, however, and overall the sagas are among the most accessible of medieval genres.

Unless your library has a copy or will obtain one for you, The Complete Sagas of Icelanders is probably not practical for a newcomer to the sagas; cheap paperback editions of any of the better known ones should be easy to come by. But if you become seriously interested in the sagas - and I should warn you that they are addictive -- then it's hard to go past The Complete Sagas.

Firstly, the translations are good. My academic friends assure me they are mostly of high quality, accurate enough to be usable for scholarly purposes. More importantly for the lay reader, they are lively and readable, avoiding inappropriate archaism or colloquialism. The sagas are each preceded by a brief note on when they were written and their manuscript sources, but otherwise they are clean, mostly unburdened by unnecessary commentary or annotation. The only regular exceptions to this are marginal glosses for the "kennings", highly figurative stock phrases in the poetry embedded in some of the sagas, and some explanatory notes where texts are partial or put together from different sources.

For readers who do want some background information, The Complete Sagas has a really good general introduction, a glossary of terms which are likely to be unfamiliar, some maps, and an index of characters. A minor complaint here is that the maps could show more detail and that they are all at the end of volume five, instead of in the appropriate volumes - and the index of characters is useful enough that it could almost have been repeated in each volume.

Perhaps most importantly, this is the only uniform, coordinated translation of the family sagas available. Collecting alternative translations of them all would be a lot of work, if it is even possible, and the result would not offer as coherent a presentation of the genre. Places, characters, and events often feature in several sagas, and motifs, stock phrases, and thematic elements often recur; a uniform translation scheme makes these connections easier to follow. On the other hand, the sagas do vary in style, mood, and structure, and this too is easier to appreciate when not obscured by variations in translation approach.

Finally, The Complete Sagas of Icelanders is beautifully produced. The leatherbound volumes find an elegant balance between attractiveness and austerity, and are of a size, shape and heft that makes reading them a pleasure (unlike some "great books" editions which are obviously designed to look impressive on shelves rather than to be read).

One minor caveat is that the title The Complete Sagas of Icelanders, while technically accurate, may mislead some: all the sagas about early Iceland (the "family sagas") are indeed included, but not any of the "fantasy" sagas such as the Saga of the Volsungs (based on older legends) or "romances" (based on continental models) from the same period. We will just have to hope that Leifur Eiriksson Publishing takes on the translation of those as a future project. A paperback edition would obviously make The Complete Sagas much more accessible; barring that, it would be nice if the volumes were available separately, so people could collect the set over a period of time.

Purchase The Complete Sagas of Icelanders at FatBrain or Leifur Eiriksson Publishing.

Beowulf author Seamus Heaney, translator pages 106 publisher Faber & Faber rating 9 ISBN 0-571-20376-0 summary An effective verse translation of the Anglo-Saxon epic.

For those unfamiliar with Beowulf, it is a late first millennium Anglo-Saxon epic about the hero Beowulf's fights with three monsters: Grendel, Grendel's mother, and, fifty years later at the end of his life, a dragon. Since its rediscovery in the early nineteenth century, it has become a recognised classic, translated scores if not hundreds of times. Not being able to read Old English, all I can say here is that Heaney's translation gave me a better understanding of why people rave about the poem than any of the others I have read.

Perhaps the most notable aspect of Heaney's Beowulf is that it can be read almost as if it were prose - and then mined more deeply for the poetry. Heaney writes in his introduction:

"I came to the task of translating Beowulf with a prejudice in favour of forthright delivery. I remembered the voice of the poem as being attractively direct, even though the diction was ornate and the narrative method at times oblique."

So he captures something of the Anglo-Saxon alliterative verse form, but not at the expense of "the sound of sense;" he doesn't inflict awkward archaisms on the reader and is never difficult to read. Here is a brief sample, from the wait after Beowulf dives to attack Grendel's mother.

"Immediately the counsellors keeping a lookout
with Hrothgar, watching the lake water,
saw a heave-up and surge of waves
and blood in the backwash. They bowed grey heads,
spoke in their sage, experienced way
about the good warrior, how they never again
expected to see that prince returning
in triumph to their king. It was clear to many
that the wolf of the deep had destroyed him forever."

An immense body of critical work on Beowulf exists. In his introduction Heaney very briefly touches on this, offering a few hints to understanding and interpreting the work. He also discusses some translation issues, feeling obliged to justify his use of one or two obscure Irish words.

Scholars may cavil at Heaney's liberties ("an interpretation and not a translation") and there are certainly better translations for scholarly purposes. Translation is always a balance between competing concerns, however, and a verse translation that attempts to convey something of the power of the original as a poem must inevitably deviate from the literal. Tolkien's seminal essay "The Monsters and the Critics" urged scholars to approach Beowulf not just as a philological curiosity or a source document for Anglo-Saxon language and history but as a poem and a story -- and Heaney offers lay readers a chance to appreciate something of that too.

Purchase the U.S. edition of the Heaney's Beowulf from FatBrain

Danny Yee writes: "Last year I reviewed Jakob Nielsen's Designing Web Usability . Read on for my review of his latest book, Homepage Usability." This might make you want to go and revise your own home page. Homepage Usability author Jakob Nielsen, Marie Tahir pages 315 publisher New Riders rating 9 reviewer Danny Yee ISBN 0-7357-1102-X summary high-profile homepages deconstructed in colorful detail.

You might want to read Homepage Usability just for the entertainment of watching web usability guru Jakob Nielsen deconstruct the homepages of fifty major sites. Or you could read it for some invaluable advice on web design -- I learned a lot from it, as I think even seasoned web designers will.

Homepage Usability begins with 113 tips on homepage design, some of them obvious and some not so obvious, and most of them applicable more broadly than homepages. Here are two of the shorter ones:

Use graphics to show real content, not just to decorate your homepage. For example, use photos of identifiable people who have a connection to the content as opposed to models or generic stock photos. People are naturally drawn to photos, so gratuitous graphics can distract users from critical content.

Don't use clever phrases and marketing lingo that make people work too hard to figure out what you're saying. For example, the "Dream, Plan, & Go" category on Travelcity might sound catchy to a marketing person, but it's not as straightforward as "Vacation Planning." Every time you make users ponder the meaning behind vague and cutesy phrases, your risk alienating or losing them altogether. Users quickly lose patience when they must click on a link just to figure out what it means. That isn't to say that homepage text should be bland, but it must be informative and should be unambiguous.

Nielsen and Tahir then look at some statistics on the fifty sites considered. These statistics are used to make recommendations, following Jakob's Law of the Internet User Experience, that "most users spend more of their time on other sites." Here's a sample:

Link Formatting

Next to the use of colored text, the underline is the second-most important cue to users that text is clickable, and 80% of the homepages underlined the links. We continue to recommend that links be underlined, except possibly in navigation bars that use a design that makes it more than commonly obvious where users can click.

Of the homepages in our sample, 60% used the traditional standard for link colors: blue. This is a fairly small majority, but still large enough that we continue to recommend blue as the color for unvisited links. If links are blue, users know what to do. End of story.

All this packs a remarkable amount of useful information into the first 50 pages, but the vast bulk of Homepage Usability, some 250 pages more, consists of analyses of the fifty chosen homepages. These follow a standard format. A full-page screen-shot faces a brief commentary, discussion of the page TITLE and tagline (if any), and a pictorial (overlay plus pie chart) breakdown of screen "real estate" into operating system and browser controls, welcome and site identity, navigation, content of interest, advertising and sponsorship, self promotion, and unused/filler. Then follow either two or four pages with detailed commentary: the screen-shots are repeated on the left-hand pages with elements numbered, and the right-hand pages have comments on them. Many of these are trivial and site-specific

"This Go button's color isn't noticeable enough - there should be much more contrast with the background color."

some of them amusingly so

"In general, oil companies would best avoid photos that show large dark shadows in the water next to their rigs."

Others are more general

"Don't have a special Shop link when there is a product section. The natural thing for users is to find the product first and then decide to buy it."

The sites covered are mostly those of corporates or media organisations - Ebay, ExxonMobil, ESPN, IBM, Victoria's Secret, and CNNfn, to name a few -- but some government departments are included and there's a good sprinkling of English-language sites outside the United States, such as those of the BBC and Australian supermarket chain Coles. The vast bulk of the analysis is, however, just as relevant for other kinds of organisations -- certainly for the university at which I work and the charity for which I do volunteer work, but also for my personal sites.

Finally, a comment on the physical book. A large square volume, 25cm a side, with colour everywhere, Homepage Usability is really nicely laid out. I'm not generally a fan of books with a lot of graphics and screen-shots, but here they are used to good effect, demonstrating how some things can still be done much more effectively in print than online.

You can order this book from Fatbrain. Check out Danny's other Internet and publishing reviews. Want to see your review in this space? Check out our book review guidelines first :)

danny writes: "Legislation is before the New South Wales (Australia) state parliament that would make it a criminal offense to publish material unsuitable for children online. Other states will be passing similar laws, as this is part of a uniform national approach. So please help us stop this! Note: earlier Federal legislation in Australia covered Internet Service Providers, not end-users. But this law follows that in attempting to directly transfer the film censorship system to the Net - one has to wonder how many of the politicians involved actually use the Net."

Danny Yee wrote this review of a classic work (from way back in 1968) from one of the classic science fiction authors, Roger Zelazny. A third of a century later, Danny seems to think it holds up pretty well.

Lord of Light author Roger Zelazny pages 261 publisher Methuen rating 10 reviewer Danny Yee ISBN 0-413-58250-7 summary epic science fiction using Hindu and Buddhist themes

Colonists from Earth, using a mix of mental powers and high technology, have long ago subjugated the native inhabitants -- and are now making themselves into gods, ruling over their descendants within a framework set up in imitation of Hinduism and ancient India. But even as the "Deicrat" consensus firms, there is dissent: Sam, one of the First, the crew of the original spaceship, remains an "Accelerationist," wanting to spread scientific knowledge to everyone. He starts a one-man crusade to bring down Heaven, a crusade that will lead him to the depths of Hellwell and to Nirvana and back.

Lord of Light is a lively novel with plenty of action -- duels, battles, confrontations, defiances, and repartee. Following the structure of Indian epics, elaborated sub-stories adorn a simple overall plot, with each chapter an episode in Sam's war against Heaven: his taking up arms against Heaven, his revival of Buddhism and the attempts to kill him, his loosing of the demons and possession by one of them, his capture and imprisonment in the Celestial City, his escape and defeat in a climactic battle, his return from Nirvana, and his final victory. (The first chapter is chronologically the second-last, which is a little confusing at first.) While few of the characters have much depth, they manage to be both human and (when they take on their Aspects and wield their Attributes) embodiments of fundamental forces. Sam himself is a crotchety old-timer and a con-man and a trickster - but also an embodiment of military prowess and defiance against odds.

The scientific scaffolding always remains visible -- Shiva's trident is a device, "reincarnation" is done through body farms and mind transfer machinery, the Christian heretic Nirriti uses guided missiles -- and Lord of Light is clearly science fiction rather than fantasy. This is affirmed explicitly within the story by Yama, engineer and god of Death, explaining that demons are "malefic, possessed of great powers, life span, and the ability to temporarily assume virtually any shape" - but not "supernatural".

"It is the difference between the unknown and the unknowable, between science and fantasy - it is a matter of essence. The four points of the compass be logic, knowledge, wisdom and the unknown. Some do bow in that final direction. Others advance upon it. To bow before the one is to lose sight of the three. I may submit to the unknown, but never to the unknowable. The man who bows in that final direction is either a saint or a fool. I have no use for either."

Which is a sentiment to warm the hearts of hard science fiction devotees, even without the "technology good, theocracy bad" plot elements.

Despite the underlying epistemology, however, the dominant "mode" of Lord of Light is mythic rather than scientific. Zelazny does more than raid Hinduism and Buddhism for props - he ends up touching on the genuinely numinous, evoking through language and mood something of the power of real religion and myth. Buddhism, for example, is introduced by Sam as a counter to Hinduism, but his own beliefs are ambiguous and when one of his disciples (originally an assassin sent to kill him) attains enlightenment, it is obvious that Buddhism has taken on a life of its own. Lord of Light sports quotations from Indian scriptures at the beginning of each chapter and uses themes and language and ideas taken from them throughout. At one point Sam delivers a three page sermon, for example, and the penultimate paragraph of the novel is

"Death and Light are everywhere, always, and they begin, end, strive, attend, into and upon the Dream of the Nameless that is the world, burning words within Samsara, perhaps to create a thing of beauty."

This could easily have been tedious or trite but in Zelazny's hands it actually works. Myth and religion never actually break free from the scientific scaffolding, but they manage to make it irrelevant -- one could almost consider Lord of Light a demonstration that their symbolic power does not rest on their metaphysical claims.

Despite its serious approach to religion and its success as epic, Lord of Light is at the same time rather light-hearted, sometimes verging on the flippant.

"It was early morning. Near the pool of the purple lotus, in the Garden of Joys, at the foot of the statue of the blue goddess with the veena, Brahma was located.

The girl who found him first thought him to be resting, for his eyes were still open. After a moment, though, she realized that he was not breathing; and his face, so contorted, underwent no changes of expression.

She trembled as she awaited the end of the universe. God being dead, she understood that this normally followed. But after a time she decided that the internal cohesiveness of things might serve to hold the universe together for another hour or so; and such being the case, she thought it advisable to bring the matter of the imminent Yuga to the attention of someone better suited to cope with it."

Zelazny also includes a few truly terrible puns.

Somehow all the disparate components of Lord of Light -- humour and epic, science and religion, action and philosophy -- come together in an successful novel. The result is my favourite Zelazny work and indeed one of my favourite science fiction novels of all time. Though it won the Hugo award in 1968, it has I think been relatively neglected; it can bear comparison with the much better known Dune (and I suspect Zelazny was inspired by Frank Herbert's use of Sufism in that work).

Purchase this book from FatBrain. Check out Danny Yee's other book reviews, especially the science fiction and India sections.

Danny Yee popped up this review from down under of the provacatively titled Proudly Serving My Corporate Masters: What I Learned in Ten Years as a Microsoft Programmer . This sounds like a fun read, but not without flaws.

Proudly Serving My Corporate Masters author Adam Barr pages 342 publisher Writers Club Press rating 8 reviewer Danny Yee ISBN 0-595-16128-6 summary What Adam Barr Learned in Ten Years as a Microsoft Programmer

Barr worked as a low-level developer at Microsoft and his account in Proudly Serving My Corporate Masters, built around his firsthand experience, offers a perspective on the company "from the ranks". This is combined with more general commentary on recent computing issues, with reflections on evangelism, community, and open source. The result has something for a range of people: those curious about Microsoft, involved in debates about the merits of open source, responsible for recruitment and management of programmers, or just interested in computing history.

Barr begins by describing how he came to work for Microsoft. This is the start of four chapters on Microsoft's recruitment system, covering both the initial selection on campus, the interview system, and the overall effectiveness. There is also an introduction to how work is structured at Microsoft, in particular the division between developers, program managers, and testers. Three chapters then describe Barr's time at SoftImage, a Microsoft acquisition producing digital editing software. Here we are introduced to the different types of "demos" (from carefully scripted sessions presented by special "demo artists" to genuine "hands-on" demos) and the complexities of dealing with third-party hardware suppliers.

Three chapters then present a potted history of computing over the last twenty years or so, beginning with an account Barr wrote as a teenager back in 1982, after visiting ComDex. Barr focuses on evangelism - on the factors that contribute to one platform or operating system winning out over others - and in particular why IBM PC hardware became ubiquitous, why MSDOS beat CP/M-86, and why Windows beat OS/2. None of this is particularly novel, but it's a nice lively account.

This leads naturally to more recent conflicts and debates which pit (as flagship icons) Microsoft against Linux. Again, there is nothing spectacular here, but Barr offers an intelligent, informed, and balanced perspective, coming up with some points that were new to me. Of the claim that it will be difficult to find programmers to do the "unsexy" work with Linux, for example, he writes

"Microsoft, being a company with salaries and a supervisory hierarchy, has the ability to order someone to work on something he or she doesn't want to work on, but I never recall this happening. People worked on things that interested them and projects still got complete coverage. There is no reason that the same should not be true of Linux, especially given the size of the Linux community."

Two chapters evaluate attacks against Microsoft, the first addressing popular criticisms and the second the various legal attacks. Here Barr is level-headed, calmly rebutting some of the sillier attacks while accepting valid criticisms.

A major weakness of this material is that Barr only ever talks about "open source" (a development methodology) and never about "free software" (a much broader movement). One major reason for techs ranting at Microsoft is their unhappiness with loss of choice, freedom, and control - and this has been articulated as an ethical and political position by the Free Software Foundation and others. But Barr never considers this argument against Microsoft at all.

A chapter on online community is really a digression. The final two chapters then consider the future of Microsoft. Barr argues that Microsoft should stick to its core PC business and not get distracted by ventures such as the XBox. He ends where he started, arguing that the key to Microsoft's future lies in its handling of employees, in its ability to attract, recruit, and retain good people.

Proudly Serving is nicely laid out and has obviously been carefully edited. Barr avoids most technical details (an exception is some discussion of buses and video hardware in the chapters on SoftImage) and offers separate digressions on Code, APIs, and Middleware. A minor complaint is that the workings of Microsoft stock options are only explained in the last chapter, by which point the reader will either have worked it out for themselves or decided they don't care.

Purchase this book from FatBrain. Visit the author's web site or check out Danny Yee's five hundred other book reviews.

danny writes: "Much has been said about the death of the banner-ad, but I was curious about whether text-only ads on a smaller scale worked. So I carried out an experiment in micro-advertising." This is the complete opposite approach of most advertising. Does it work? Well....

danny writes: "Much has been said about the death of the banner-ad, but I was curious about whether text-only ads on a smaller scale worked. So I carried out an experiment in micro-advertising." This is the complete opposite approach of most advertising. Does it work? Well....

If your life is an acronym soup of protocols like IPX and CLNP, and you sometimes feel like you need a cot in the wiring closet, you probably ought to keep reading -- more so if finding a fount of information neither too abstruse nor too patronizing is important. For the networking professional, inveterate reader and reviewer Danny Yee here briefly takes on a book called Interconnections: Bridges, Routers, Switches, and Internetworking, which could be that fount.

Interconnections author Radia Perlman pages 537 publisher Addison-Wesley rating 8.5 reviewer Danny Yee ISBN 0-201-63448-1 summary Well-grounded introduction for the technically astute to the hardware which carries your data and how to communicate with it. Interconnections is aimed at computer science students studying networking: it covers fundamental concepts and basic theory, and includes a set of "homework" problems with each chapter. But it is solidly grounded in real-life experience -- Perlman has spent years designing and implementing network protocols and algorithms (most notably the spanning tree algorithm used in most bridges) and uses that experience to provide practical illustrations of the theory. She is also fun to read, being prepared to laugh at things that deserve it and to offer personal opinions, sometimes quite bluntly.

"I find BGP scary. It is configuration-intensive. Routes can be permanently unstable. It solves only whatever it happens to solve rather than providing a general-purpose solution. But we're stuck with it."

Perlman roughly follows the protocol stack upwards. Four chapters cover general data-link layer issues, transparent and source-routing bridges, the various categories of hub/switch/bridge, and VLANs. Five chapters cover the network layer cover connection-oriented protocols (X25 and ATM) and general issues, addressing, and packet formats in connectionless networks, with examples from a range of protocols including IP, IPX, IPv6, CLNP, Appletalk, and DECnet. A single chapter covers autoconfiguration and endnode issues (protocols such as ARP). And there are five chapters on routing, covering general routing concepts (distance vector and link state algorithms, link costs and types of service), implementation (algorithms for fast packet forwarding), and specific routing protocols (from RIP to BGP), as well as the more specialised topics of WAN multicast and "sabotage-proof routing."

The bulk of Interconnections may be too detailed for most network administrators or programmers, but those without an interest in the theory may want to track down a copy just for the last two chapters. "To Route, Bridge, or Switch: Is That the Question?" is a good overview of networking terminology and its connection with reality, while "Protocol Design Folklore" attempts

"to capture the tricks and 'gotchas' in protocol design learned from years of layer 2 and layer 3 protocols. Interspersed among the text are boxes containing 'real-world bad protocols.' They share with you the warped way I look at the world, which is to notice and be distracted by suboptimal protocols in everyday life."

Interconnections will do much to improve understanding of networks and network protocols: as well as being an excellent textbook, it should command a general audience among computing professionals.

Purchase this book from Fatbrain. You can read more of Danny Yee's reviews at his site.

Jon Lasser is the author of ThinkUnix a new learning UNIX/how-to. While Danny Yee of dannyreviews actually wrote the review, I've read the book as well. It's good -- it's different from other learning Unix books because he really wants you to learn the concepts behind Unix -- to grok it. ThinkUnix author Jon Lasser pages 294 publisher Que 2000 rating 8 reviewer Danny Yee ISBN 0-7897-2376-x summary Rather than trying to be a detailed guide to a particular system, a comprehensive reference work, or a source of answers to particular problems, Lasser tries to teach the fundamental concepts of Unix and the Unix way of thinking.

In a world full of volumes like Linux: The Complete Reference, Debian GNU/Linux 2.1 Unleashed, Corel Linux for Dummies and so forth, Lasser's Think Unix is a breath of fresh air. Rather than trying to be a detailed guide to a particular system, a comprehensive reference work, or a source of answers to particular problems, Lasser tries to teach the fundamental concepts of Unix and the Unix way of thinking. He also captures something of the way in which Unix is a way of life and a culture, not just an operating system, with a good leavening of humour, history, and hackish lore. One consequence of this approach is that Think Unix will date far less quickly than most operating system books. I recommend it to computer science students, techies coming from non-Unix backgrounds, or anyone more interested in understanding the underlying ideas of Unix than solving particular problems.

Lasser starts with a chapter on documentation, explaining how to use "man" to read manual entries and touching on other forms of documentation. He then introduces the building blocks of Unix - files and processes and redirection and pipes. A brief look at TCP/IP networking, showing how to interact directly with some common network services using telnet, is followed by an introduction to vi and sed and basic regular expressions. Four chapters then deal with shell scripting in more detail, touching on differences between shells, variables and quoting, control structures, and aliases, functions, and scripts. A quick look at X explains its general design, something of the variety of window managers and desktops available, and basic configuration of startup, resources, and fonts.

Obviously a lot is left out of this (there is nothing about system administration, for example), but it provides solid foundations for further learning. And a number of topics sneak in "in passing": a mention of ssh (and associated legal issues) and a little bit about termcap and terminfo, among other things. Some practice problems are included, simple exercises to test understanding and help learning; answers to these are provided in the appendices, along with a short glossary (which includes pointers to other resources).

Think Unix has an unfortunate number of typos, including a few in code examples. And there are a few things I might have done differently (I'd have ditched most of the grainy greyscale half-page screenshots of different window managers and desktop environments, for example). Overall, however, it's a great book and the biggest problem it poses me is working out which of my "clueful but not Unix-literate" friends to pass my review copy on to.

Purchase this book at ThinkGeek.

A book review by Danny Yee <editor@dannyreviews.com>
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A few years ago, knowing just a few html tags and tricks could probably have gotten you a job as a full-fledged Web designer, or at least Web coder. As things get more complicated and Web sites more dynamic, the tools you need to create that all-singing, all-dancing user-interactive content have gotten more complex than carets and single letter tags. Danny Yee wrote these reviews of two of the many available books on PHP programming; to see Danny's hundreds of other reviews, check out the links provided at the bottom.

Web Application Development with PHP 4.0; The PHP Pocket Refere author see each pages see publisher see each rating 8;6 reviewer Danny Yee ISBN see each summary Both of these books are intended to serve as references for PHP programmers, but take different approaches in doing to.

Web Application Development with PHP 4.0 is a book one can actually read: it contains no undigestible slabs of reference material or code (these are relegated to the accompanying CD). Coverage of a wide range of largely independent topics also makes it a great volume for browsing in. And as a system administrator who does only a little bit of programming, in a variety of languages, I appreciated its "broad overview" approach.

The opening chapter of Web Application Development is a very brief look at some general programming issues - code formatting, documentation, APIs - that are all too rarely mentioned in programming language books. The second chapter covers PHP "advanced syntax": lists and arrays, object-oriented programming, and a bit on polymorphism and self-modifying code. (I finally got a handle on PHP's slightly odd handling of lists from this.) And chapter three presents a development example, coding an IRC interface in PHP.

Chapters four through seven cover a large selection of topics: sessions and session-handling, security, usability, validating form data, CVS, COM and Java interfaces, database integration, authentication, templates, XML, and WDDX. Much of this is not at all PHP-specific. Of the thirty-two pages on XML, for example, the first twelve are a general introduction that is not at all language-specific (the remainder describe how to use the Expat and LibXML parsers built into PHP, with examples). And the material on CVS presents some PHP scripts for automating notifications, but is otherwise completely generic.

I found the last two chapters less interesting. Chapter eight contains three case studies of organisations using PHP, but these are more sales pitch than substance (I really don't think it makes sense to be "marketing" PHP three hundred pages into a book on the language). The final chapter of Web Application Development is about modifying the C code at PHP's core. I skipped quickly over this and suspect the vast majority of readers will do the same.

Title; Authors Web Application Development with PHP 4.0; Tobias Ratschiller, Till Gerken Publisher, ISBN New Riders, 0-7357-0997-1 Other 384 pages, includes CD

(Order Web Application Development with PHP 4.0 from Fatbrain.)

The PHP Pocket Reference is right at the other end of the readable/reference continuum. It has two tiny discursive examples (of form handling and database integration) but otherwise is pretty solid: thirty pages introducing PHP syntax are followed by eighty pages of function prototypes with one sentence descriptions. And yes, it will fit into a (large) pocket. I have used the Pocket Reference occasionally, but I suspect only because it has been sitting next to my computer while I write this review -- once it goes onto more distant shelves, using the online documentation will probably be faster.

Title; Authors The PHP Pocket Reference; Rasmus Lerdorf Publisher, ISBN O'Reilly & Associates, 1-56592-769-9 Other 114 pages

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danny writes "Australian academic and activist Brian Martin has written a detailed paper Against intellectual property. This is an accessible presentation that covers the area quite broadly." Excellent paper - more than the typical slogans in this subject area, and well worth reading in depth.

danny writes "Australian academic and activist Brian Martin has written a detailed paper Against intellectual property. This is an accessible presentation that covers the area quite broadly." Excellent paper - more than the typical slogans in this subject area, and well worth reading in depth.

Danny Yee writes: "The struggle for free software is part of a broader struggle for free information and communications. Those who will be hurt most by commodification and appropriation of information are the poorest men and women around the world - so we are trying to interest aid and development agencies in intellectual property issues. Read Information as a Global Public Good - a proposal for an Oxfam International advocacy campaign."

Danny Yee writes: "The struggle for free software is part of a broader struggle for free information and communications. Those who will be hurt most by commodification and appropriation of information are the poorest men and women around the world - so we are trying to interest aid and development agencies in intellectual property issues. Read Information as a Global Public Good - a proposal for an Oxfam International advocacy campaign."