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User: sribe

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  1. Re:They made a decision that's easier for them. on Future of Cars: Hydrogen Fuel Cells, Or Electric? · · Score: 1

    The car will still have a fuel tank, and will still run an internal combustion engine.

    No, it will use a fuel cell. It is extremely unlikely that there will be any internal combustion engine.

  2. Re:Hydrogen has more potential to be economic on Future of Cars: Hydrogen Fuel Cells, Or Electric? · · Score: 1

    Electric will always have the advantage of regenerative braking though. So it is possible the future hybrid cars might be Hydrogen + Electric anyway.

    I would think that storing the power recaptured from your last stop long enough to help power your next start would require a such a teeny weeny battery that you'd really just need a small bank of supercapacitors instead. IOW, I expect that this would absolutely be a standard feature of hydrogen-powered cars.

  3. Re: Electric. on Future of Cars: Hydrogen Fuel Cells, Or Electric? · · Score: 1

    I can't speak to the transmission losses, but the source of the electricity can be up to 80% efficient in modern co-generation facilities, and I seem to recall tests have shown that 85% - 90% of the electricity put into charging a Tesla comes back out.

  4. Re:Electric. on Future of Cars: Hydrogen Fuel Cells, Or Electric? · · Score: 3, Informative

    I think you'd be surprised. In urban driving, some some typical numbers would be engines about 40% efficient in terms of extracting energy from fuel...

    Uhm, no. Maximum theoretical efficiency of a perfect (massless, frictionless) ICE at the compression ratios available in passenger cars is more like 35%. Actual efficiency doesn't top 85% - 90% of 35%, in other words, less than 30%.

  5. Really??? on Your Old CD Collection Is Dying · · Score: 2

    Because just last month, I re-ripped well over 300 old CDs into a lossless format, and had 0 problems.

  6. Re:Just a decade ago. on WebKit Unifies JavaScript Compilation With LLVM Optimizer · · Score: 1

    And then on to memory. Firstly, garbage collected languages can only get with a factor of 2 for memory use (or so) before the computational cost of GC starts to dominate [citation needed]. Really, there are papers studying this. This has an impact on speed because it can make the cache coherency worse, and does also affect scaling on large datasets.

    IIRC, you're wrong about the factor of 2; it's actually much worse than that.

    Other than that, yes all good reasons that javascript is not now fast, but is instead now less incredibly slow... And don't forget all the inlining that you get with C++ and templates...

  7. Re:The bigger picture on A Look at Smart Gun Technology · · Score: 1

    You'd have to assume about 1/3 of gun deaths are caused by toddlers shooting someone for the odds to be that high.

    Are you counting odds per person, or odds per household, or odds per gun-owning household? (I did the latter.)

  8. Re:The bigger picture on A Look at Smart Gun Technology · · Score: 3, Informative

    Wow, really? A couple hundred deaths a year from toddlers alone? Please cite a source for that, other than your ass.

    A couple hundred deaths per year of children 12 and under, not toddlers, with no info on the ages of the shooters.

  9. Re:The bigger picture on A Look at Smart Gun Technology · · Score: 1

    The odds of your gun being grabbed and used against you are high.

    No, they are infinitesimal. This basically never happens.

    The odds of your toddler picking up your gun and using it on family or friend are significant - it happens at least several times a week in this country.

    Now that does indeed happen, tragically. But: 1) there are simpler ways to prevent it, 2) the actual odds are way down in the 1 in something-100,000 range.

  10. Re:So... providing electricity is easy, IT is hard on Ask Slashdot: How Do You Tell a Compelling Story About IT Infrastructure? · · Score: 2

    Electricity is, outside of the actual generating plants, just wires.

    And transformers. And lots of electronics to monitor things, all geographically distributed. And interconnects (with lots of transformers), which will be remotely controlled to shunt power between sub-grids. And fancy algorithms to monitor demand, and weather, and predict future demand, and start bringing generators (and sometimes entire plants) on- and off-line with enough lead time to meet actual demand. And the bringing of generators on- and off-line can be a very complex process in itself.

    And I don't even really know anything about the power grid--I'm just a consumer. So you have given us a shining example of the classic IT nitwit arrogance: "anything I do not do is trivial" ;-)

  11. Re:I started with a Humanities Degree on An MIT Dean's Defense of the Humanities · · Score: 1

    In my experience the most arrogance come from people in humanities. They are arrogant to the extreme about what they know and about what they thing they don't need to know even more.

    In my experience, that varies greatly within the particular field, and between colleges. In other words, it's a minority, but yeah, they are annoying as hell...

  12. Re:Although I agree... on An MIT Dean's Defense of the Humanities · · Score: 1

    You're one of those nutters who think that Generalizations are bad because you have no Idea what outliers are and don't realize that generalizations don't limit individuals to being outliers; Nor do you care to do any fucking research at all before you flap your anecdotal gums, because you haven't a clue whether you're an outlier or in the middle of the trend -- It just doesn't fucking matter to you, it's all about YOUR experience. Oh how dare they drip a bit of paint on Your special Snowflake experience when talking about the vast majority of experience.

    Uhmmmmm, no. You're the one confusing outliers and trends.

  13. Re:Meh on An MIT Dean's Defense of the Humanities · · Score: 1

    Philosophy is the foundation of science...

    I'd feel much better about the liberal arts education that many kids get these days if philosophy didn't seem so rare. I swear it seems like you can get a degree without ever seeing anything other than the steaming bullshit ladled out by "deconstructionists".

  14. Re:MIT, you say? on An MIT Dean's Defense of the Humanities · · Score: 1

    Why should we trust a mouthpiece of an organization that murders students?

    I certainly do not condone their complacence in that case. But Aaron Swarzt was not an MIT student. That fact often seems to get lost in the hullabaloo of indignation around here.

  15. Re:I started with a Humanities Degree on An MIT Dean's Defense of the Humanities · · Score: 1

    I've never understood why math/science/programming geeks are stereotypically bad at spelling (or language in general). It should be about the same kind of attention to detail in both cases.

    Because some have this idiotic arrogance about the subject, and refuse to acknowledge the importance.

  16. Re:What is MPGe supposed to mean? on BMW Created the Most Efficient Electric Car In the US · · Score: 1

    It's just a measure of energy. 33.7 kWh is about 120mj, which is the same as a gallon if gas.

    Hmm, wow. I knew what it was in principle. I just didn't know that it was that low. 124MPGe, for a guy who can get off-peak power at barely over $0.05/kWh. Wow. Take into account the 10% -15% loss from the charge/discharge of the batteries, and that's roughly equivalent to getting 124MPG and a discount card for $2.00/gallon gasoline.

    Too bad I live in the middle of fucking nowhere, and need all-wheel-drive Oct through Apr, and need good ground clearance. Otherwise it would be tempting as the 2nd car in a 2-car household.

  17. Re:Most? Hardly on Toyota Describes Combustion Engine That Generates Electricity Directly · · Score: 1

    I bought a ScanGauge II back in 2008 and use it to this day.

    These days you get a dongle that plugs in and communicates wirelessly with an app on your smart phone, which greatly increases the flexibility for user interface, and databases for providing more info re codes. FYI I went with the BlueDriver from Lemur Monitors. You can find tons that appear identical for a lot less money, BUT if you dig through car enthusiast forums for reviews, you find that an awful lot of the cheap ones use unlicensed knock-offs of some of the basic circuitry, and tend to die after very little use.

  18. Re:Kitchen Knives on Interview: Ask Ben Starr About the Future of Food · · Score: 1

    That's my experience with Henkels 5 star too.

    Henkels vs Wusthof: Henkels uses a harder steel, which initially keeps its edge longer, but is harder to "touch up"; Wusthof uses a softer steel which loses the fine edge much sooner, thus needs touch up (steel or ceramic disk) more frequently, but is easy to touch up. I much prefer Wusthof.

  19. Re:Grosseteste on 13th Century Multiverse Theory Unearthed · · Score: 2

    Most words with ê now used to have es in them. Fête = feste = festival. Arrêt = Arrest, etc.

    Fenestre etc. Most such words came from Latin, FYI.

  20. Re:Kitchen Knives on Interview: Ask Ben Starr About the Future of Food · · Score: 1

    And a moderate size ceramic knife.

    No. Too brittle. Chip at the slightest ding on a hard surface, so in a year or two the edge is really rough.

    I think wusthoff/henckels is just ok but not more than that.

    Yep, they're pretty good. But so are Chicago Cutlery, Gerber, Forschner, Update International, etc.

  21. Re:Fucking Casuals. on SEC Chair On HFT: 'The Markets Are Not Rigged' · · Score: 1

    There is no mechanism provided by any exchange which would allow any market maker to observe orders entering the exchange and then enter an order ahead of them.

    You assume that. You have no way of knowing it for sure. There have been explicit allegations about back-channel signaling via agreed-upon patterns of rapidly canceled orders being used to alter the sequence in which orders are processed.

  22. Re:Famous Texas saying...... on Texas Sheriffs Crash $250k Drone They're Not Supposed To Be Flying · · Score: 3, Informative

    It's not a famous "saying", it's famous "LAST WORDS" ;-)

  23. Re:What it was actually good for on 50 Years of BASIC, the Language That Made Computers Personal · · Score: 1

    Long before Lisp or Perl, Basic made things much, much easier to deal with text.

    Ahem, Lisp predates BASIC by 6 years...

  24. Re:way to over simplify the issue win the summery on SCOTUS Ends Novell's Anti-Trust Cast Against Microsoft · · Score: 2

    Their goal was to make Novell look so bad in the eyes of the consumer that nobody would ever trust the product again. This is pure maliciousness and way over the top.

    Don't forget deliberately putting bugs into their conversion to/from WordPerfect format in order to push customers away from using both.

  25. Re:-1 Copied from Republican Talking Points on HealthCare.gov Back-End Status: See You In September · · Score: 1

    Because they can't do any calculations until enrollment is closed? They can't say, for example, as of Nov. 1st, Dec. 1st, Jan. 1st, Feb. 1st, Mar. 1st, or Apr. 1st how many people have paid their premiums?

    Information for prior periods is already available, albeit from insurers individually, not from the feds overall.