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User: amorsen

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  1. Noone is enthustiastic about geoengineering on Carnegie Researchers Say Geotech Can't Cure Ocean Acidification · · Score: 2, Interesting

    Aerosols at best delay the rising temperatures. Perhaps we can come up with a temporary fix for the oceans, to tide us over until we can come up with a solution.

    If this report is correct, we'll need some quick hacks, because sustainable energy production has no chance to solve the problem on time.

  2. Re:Understatement on Why a Hard Disk Is a Better Bargain Than an SSD · · Score: 2, Interesting

    Try this. Just searching for SSD will get you lots of interesting articles there.

  3. Re:Really? I wonder... on Comcast To Bring IPv6 To Residential US In 2010 · · Score: 1

    I wonder: Anyone out there with a brand new shiney IP6 address try a release\renew to see if you get a new address?

    Your comments imply you don't know very much about IPv6. Practically noone plans to do stateful DHCP for IPv6. Release/renew won't do a thing, because the address is generated by your computer, not the DHCP server. You can change the address by changing the MAC address of your NIC or simply by picking any address you want in that subnet.

    Tracking is dead easy with IPv4. Modern high-performance deep packet inspection can do practically anything you imagine except decrypt encrypted traffic (but it can do traffic type analysis even on encrypted traffic). Making the DHCP server tell the analysis servers (or the inspection engines) which IP addresses match with which MAC addresses at which times is trivial.

  4. Re:Additional IPs on Comcast To Bring IPv6 To Residential US In 2010 · · Score: 1

    /56, not /64. Otherwise the customer can't subnet without losing autoconfiguration. Preferably /48.

  5. Re:What's the big deal with IPv6 on Comcast To Bring IPv6 To Residential US In 2010 · · Score: 1

    Because ISPs exist to make money, not to provide a civil service to people. ISPs (especially the bigger ones) are going to do whatever they can to maximize profits. Just because there's essentially an unlimited number of IPv6 addresses available doesn't mean that the value of a public IP will disappear.

    It all depends on how much people are going to scream. Customers of large corporations generally get screwed precisely as much as they accept without making public protests.

    Hopefully people will complain loudly enough that the ISPs will just follow the path of least resistance (i.e. the standards), since it doesn't cost them anything.

  6. Re:Small block? on Comcast To Bring IPv6 To Residential US In 2010 · · Score: 1

    Actually, unless Comcast is totally bucking well-established standards, every customer will be allocated at least a /56. Giving out just a /64 is severely frowned upon, and lots of us are crossing our fingers that it doesn't happen.

  7. Re:Proud to be a Comcast customer? on Comcast To Bring IPv6 To Residential US In 2010 · · Score: 1

    Why couldn't you make an IPv4 multicast address for each TV channel?

  8. Re:Stupid story on Why a Hard Disk Is a Better Bargain Than an SSD · · Score: 1

    SSDs can read and write at double the speed of a HDD in many cases.

    More like an order of magnitude when used in real life where almost nothing is placed in linear chunks of 100MB+

  9. Re:pointless analysis: -1! on Why a Hard Disk Is a Better Bargain Than an SSD · · Score: 1

    You would most likely be terribly disappointed if you bought that drive, even at 1/5th the price. No name SSD's are universally slower than old-fashioned HDD's, by orders of magnitude.

    Basically: If it isn't Intel, don't buy it.

  10. Re:If you have ever owned one on Why a Hard Disk Is a Better Bargain Than an SSD · · Score: 1

    Is that like having too much memory, big enough hard disk? No such thing as fast enough.

    Perhaps not, but after I got my X25-M, I have only once noticed that I was waiting for hard drive activity. That was during the upgrade from Fedora 10 to Fedora 11.

  11. Re:Understatement on Why a Hard Disk Is a Better Bargain Than an SSD · · Score: 2, Informative

    Anandtech did all the hard work, and all ComputerWorld did was add hype and exaggeration. Read Anandtechs articles, and then you'll know what the SSD slowdown means, and whether it's a good idea for you to pick an SSD for your next drive.

    Anandtech isn't perfect tech journalism, but it's head and shoulders above practically everything else written in English.

  12. Re:useful energy is not free on English Market Produces Energy With Kinetic Plates · · Score: 1

    When you slow down, your kinetic energy either goes to this electric generator, your brakes as heat, or your shocks as heat.

    At low speeds, the kinetic energy when slowing down mostly goes to keep the engine running without using fuel, unless you actually use the brakes or the clutch (as if anyone in the US even has a clutch pedal...) This thing is only free energy if the alternative is braking. I have no idea whether people brake for speed bumps in such places, or just use engine braking.

    With hybrids it's worse. For those, this thing will be an almost guaranteed energy stealer.

  13. Re:useful energy is not free on English Market Produces Energy With Kinetic Plates · · Score: 2, Insightful

    So your point is that it doesn't cost you much energy. My counterpoint is that then it doesn't provide them much energy -- unless energy out > energy in.

  14. Re:alternative dns servers; on A Black Day For Internet Freedom In Germany · · Score: 3, Interesting

    Yeah, because that caching nameserver just magically pulls its DNS info out of thin air...

    Err, yes? Or rather, it starts with the root servers, which is as good as anything gets. Certainly better than OpenDNS, which isn't above manipulating answers.

  15. Re:What are these architectures good for... on Sun Kills Rock CPU, Says NYT Report · · Score: 1

    You realize that the cheapest SPARC can handle more threads per cycle than a dual-quad Xeon, and do it while using less electricity, right?

    Err, no. The cheapest SPARC is probably still some UltraSPARC IV+ thingy, and those are absolutely hopeless (and single-core). The T2 might have a chance on a few work loads, but Intel will very soon have 8-core 16-thread CPU's out with twice the clock rate and much better per-thread IPC than the T2.
     

    As for the big-iron chips, they handle databases on a scale that dwarfs the address range of x86,

    Nehalem supports 44 physical address bits. I'll bet you that there are no NUMA or SMP SPARCs out there with 16TB memory. Indeed, the T2 is limited to 40 address bits, or 1TB,.
     

    relying on more registers than even exists in the x86 architecture.

    The number of registers has absolutely nothing to do with scaling.

  16. Re:CPU usage? on Linux To Be First OS To Support USB 3.0 · · Score: 1

    Asynchronous event models are sooooo 60's. USB needs considerably more to make it into the 21st century, so Abcd1234 was entirely correct.

  17. Re:Our guns vs. theirs on How Do You Greet an Extraterrestrial? · · Score: 1

    Good point.

  18. Re:Our guns vs. theirs on How Do You Greet an Extraterrestrial? · · Score: 1

    Won't work. Nothing has 100% lethality, and pockets of people will survive.

    Besides, Madagascar will close their port.

  19. Re:Our guns vs. theirs on How Do You Greet an Extraterrestrial? · · Score: 1

    Now there's nobody to set bones, take out a bad apendix, and so forth.

    Who cares. As long as a good fraction of people make it to be parents, the species will survive.

    High tech civilisation falls apart, there's nobody to repair things.

    We'll have the use of fire, and with just a tiny bit of luck basic metallurgy (plus lots of available high-grade ore, currently known as "cars"). That's better than what we had until 5000 years ago.

  20. Re:from the why-isn't-my-car's-dome-light-an-led d on Printable, Rollable Solar Panels Could Go Anywhere · · Score: 1

    The power to drive the light comes from the battery, which is charged by the alternator. The alternator doesn't care.

    I don't know where you get this from. Electricity is really expensive in cars; small internal combustion engines running at variable speeds just suck for making electricity. If good LEDs were available, cars would switch to them almost instantly.

    Alas, LEDs in the 60W-equivalent range are hard to come by (unless you use multiple LEDs, and that's hard in a dome light).

  21. Re:Our guns vs. theirs on How Do You Greet an Extraterrestrial? · · Score: 1

    The aliens could have very advanced technology, but only for peaceful purposes.

    It wouldn't take long for the aliens to repurpose their technology for violent purposes. If we decided to launch a strike after being visited by aliens, it would take at least decades (and more likely centuries) for us to deliver a hydrogen bomb to their home system. In that time they could certainly turn their fusion or antimatter drives into weapons...

    If you have the amount of energy needed to travel between the stars, then you also have enough energy to make life on Earth very unpleasant, should you feel like it.

  22. Re:Our guns vs. theirs on How Do You Greet an Extraterrestrial? · · Score: 2, Insightful

    They could concoct a biological weapon that doesnt require any more advanced science than we already know.

    We couldn't kill all humans with a biological weapon with our current level of technology. Maybe 90%, maybe 99% because society breaks down, but there would be survivors. Nuclear is the only option right now. In the relatively near future, an asteroid or comet strike might become an option, but that's pretty much it for now.

    Well we could of course cause runaway greenhouse effect and boil the oceans, but that would be a really big project and take a long time.

  23. Re:Great on New HDMI 1.4 Spec Set To Confuse · · Score: 1

    What the hell are you talking about? A SINGLE RCA cable will carry 7.1 audio, it's called coaxial digital.

    If you're talking S/PDIF, that's stuck at 3Mbps. It isn't really enough for 7.1, although people use it anyway.

  24. Re:What Linux needs on Harsh Words From Google On Linux Development · · Score: 1

    If the desktop is where the Linux community has decided it wants to go, Linus needs to be brought into line with that vision. At the moment, he is primarily concerned about big iron, because that is what the corporate hands that feed him primarily care about.

    You don't listen much to Linus.

  25. Re:Why should USA care about S Korea on North Korea Conducts Nuclear Test · · Score: 1

    The USA place itself on first the conventional defense and now nuclear defense obligations so that our so-called allies can dump their products on the USA. What kind of a dumb deal is that?

    Yes, it is such a raw deal to have to actually drive all these shiny new cars coming in from all over the world. And the TVs! They dump so many on the US that you have to have at least 4 in each household just to keep up.

    Life is indeed hard.