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Beyond Contact: a Guide to SETI
Some readers may recall what Stephen Hawking said about his book, A Brief History of Time:
"Someone told me that each equation I included in the book would halve the sales. I therefore resolved not to have any equations at all. In the end, however, I did put in one famous equation, E=mc2. I hope that this will not scare off half my potential readers."
Hawking was facing the same challenge as Brian McConnell faces in this book. Both are trying to turn advanced knowledge of their field of endeavour (which requires heavy math, heavy astronomy, heavy physics, heavy programming, and so forth) into a work which can be comprehended by lesser beings. McConnell has taken a different path than Hawking - his book has plenty of advanced equations, diagrams, and concepts. McConnell does a reasonable (and often very good) job at trying to bring readers up to speed when he thinks he's going to go over their heads, but it is still not a book for the faint of heart or mathematically-challenged. There are enough equations in the book to bring its readership down to (.5)n -- oh, roughly zero, give or take.
In any case, it's a good book, but technical. You were warned.
The first couple of chapters cover the history of searching for extraterrestrial life, "are we alone?", the nature of intelligence, and similar areas. Drake's Equation is the famous set of fudge-factors that would tell us whether we were likely to find other life forms, if only we knew what the values of the variables were:
N = R * fs * fp * ne * fl * fi * fc * L
Fill in values for all of those and you'll be famous forever. But what it means, as our knowledge stands now, is that we have no clue at all whether there is likely to be life out there or not. Comforting, isn't it?
The next several chapters cover the technical aspects of communicating over interstellar distances. The electrical engineers in the audience will have a leg up here; everyone else has the opportunity to learn the basics of signal processing and the peculiarities specific to communication across galaxies. Pretty thorough and informative, without being overwhelming.
Finally, the latter half of the book covers the 64,000 lightyear question: what to say? How to communicate with an intelligence where you can't assume even the most basic things in common? Yes, yes, you've probably heard of the idea of starting with the periodic table or basic mathematics and working up. But that's sort of like a dot-com business plan:
- Establish Contact
- Send Periodic Chart
- ....
- Communicate!
McConnell fills in the "...." part, and it's obvious that a great amount of thought has been put into it. Pretty quickly McConnell is describing how to send entire self-executing programs (see Vernor Vinge's A Fire Upon the Deep).
This book is a bit of an oddity. If we're just talking about entertainment reading, it falls short - too technical. If I was grading it as a scientific work, again it would fall short - not technical enough. :) But as far as I know, this is the only work which tries to explain what SETI really is in terms that educated, reasonably bright laymen can understand, and as such, it does a fine job.
You can purchase this book at Fatbrain. Want to see your review here? Check out the book review submisison guidelines! :)
fp
french toast!
fp I hope!
This site is losing all credibility quickly.
Stories about people in Afganistan who dig up commodores and then download / watch divx movies have killed off every last shred of believability this haven for anti-ms zealots ever had.
It is time to get rid of katz.
Have we heard anything back from KPAX about the where abouts of the Crazy lady who disappeared?
"All I can tell the "lesser of two evils" folks is that if they keep voting for evil, they'll keep getting evil."-Lp.org
I just heard some sad news on talk radio - former Beatle writer George Harrison was found dead in his Los Angeles home this morning. There weren't any more details. I'm sure everyone in the Slashdot community will miss him - even if you didn't enjoy his work, there's no denying his contributions to popular culture. Truly a British icon.
I gotz da sk1llz to pay day b1llz. Iss all bout da Benjamin's.
Where do we go from here?
Where do we go from here, where do we go from here
Where do we go from here, where do we go from here
They boarded up the mosques, Uzis on a street corner
You can't take a photograph of Uzis on a street corner
The DJ resigned today they wouldn't let him have his say
Surface scratched where the needles play, Uzis on a street corner
Where do we go from here
Terror in Rue de St. Denis, murder on the periphery
Someone else in someone else's pocket
Christ knows I don't know how to stop it
Poppies at the cenotaph, the cynics can't afford to laugh
I heard in on the telegraph there's Uzis on a street corner
Where do we go from here, where do we go from here
The more I see, the more I hear, the more I find fewer answers
I close my mind, I shout it out but you know it's getting harder
To calm down, to reason out, to come to terms with what it's all about
I'm uptight, can't sleep at night, I can't pretend everything's all right
My ideals, my sanity, they seem to be deserting me
But to stand up and fight I know we have six million reasons
They're burning down the mosques, Uzis on a street corner
The heralds of the holocaust, Uzis on a street corner
The silence never louder than now, how quickly we forgot our vows
This resurrection we can't allow, Uzis on a street corner
Where do we go from here, where do we go from here
We buy fresh bagels from the corner store
Where stars-and-stripes swastikas are spat from aerosols
I sit in the bar sipping iced White Russian
Trying to score but nobody's pushing
And everyone looks at everyone's faces
Searching for signs and praying for traces of a conscience in residence
Are we sitting on a barbed wire fence
Racing the clouds home, racing the clouds home
We place our faith in human rights
In the paper wars that tie the red tape tight
I know that I would rather be out of this conspiracy
In the gulags and internment camps frozen faces in nameless ranks
I know that they would rather be standing here besides me
Racing the clouds home, racing the clouds home
You can shut your eyes, you can hide it away it's gonna come back another day
Racing the clouds home, are we racing the clouds home
Racing the clouds home
I just heard some sad news on talk radio - George Harrison, the "quiet beatle," died of cancer yesterday in Los Angeles. Even if you didn't listen to his music, there's no denying his contributions to pop culture. Truly an American icon.
miranda richardson is hotter than natalie portman.
Fuck Ajit Pai