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User: jeffb+(2.718)

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  1. Well, to be fair... on Novel Fluorinated Compounds Discovered In Firefighters' Blood · · Score: 2

    It's property and lives, and, yes, facing risks on our behalf is pretty much what we ask firefighters to do every single day.

    That's not to say, of course, that we should make them guinea pigs for inadequately tested compounds, or stooges for suppliers trying to cut corners on cost and safety.

  2. That should be hard to overlook. on Study Predicts 9% Drop In Salaries of New CS Grads This Year · · Score: 1

    If that were driving a large part of the change, it should only take a moment's work with the raw statistics to tease it out. I'd say "since they don't say that, it's probably not what's happening" -- but that would be making some possibly-unjustified assumptions about the motives of those publishing these results.

  3. Now, THERE's a tourist attraction... on Astronomers Find Vast Ring System Eclipsing a Distant Star · · Score: 4, Interesting

    Since so many people have already stepped up to shame the submitter and editor about botching the ONE statement not drawn directly from the article...

    I'll just say that I would love to see a night sky featuring this ring system at, oh, say, Jupiter's distance from Earth. It would appear several times larger than the full Moon, and many, many times brighter. Anybody want to cook up a rendering?

  4. Thus confirming existing opinions: on ESA: No Conclusive Evidence of Big Bang Gravitational Waves · · Score: 4, Insightful

    Scientists and those who understand science: "Yep, that's how science works. No matter how exciting a new finding may be, if later analysis finds that its conclusions are flawed, it's out the door."

    Popular media and pundits: "See? Science is a sham! They just make stuff up to get the big research bucks! Why are we wasting money on this, instead of spending it on something that matters, like welfare or fighter jets?"

  5. Re:Spectrum is measured in Hz? on US Wireless Spectrum Auction Raises $44.9 Billion · · Score: 1

    No, that's a zeroth approximation. To a first approximation, 65Mhz of spectrum gets you capacity linearly proportional to the frequency.

    I don't think so.

    I am out of my depth here somewhat, so I may be completely wrong. But I think that any frequency band of a given width has the same information capacity as any other, given identical signal/noise. That's what the first equation on the Wikipedia page you linked seems to state -- there's no separate term for "base frequency" of your channel. There are fairly simple techniques for transforming a "passband" (a band starting or centered at a higher frequency) to a "baseband" signal (starting at DC, or 0 Hz) -- and, of course, vice-versa.

    You seem to be saying that the band from 1 GHz to 1.1 GHz would give you half the capacity of the band from 2 GHz to 2.1 GHz. I'm pretty sure that's wrong, and that the two bands, each 100 MHz wide, have the same Shannon capacity (again, given identical signal/noise).

    Of course, in reality there's a few more nasty surprises -- higher frequencies can carry more capacity but have much worse penetration through obstacles. Lower frequencies give better coverage at the cost of capacity. That's why shoving T-Mobile and Sprint up in the 1800+ nosebleeds means they will never get the coverage range of VZ and ATT down in the 700-800 range.

    Yep, that's one of the higher-order issues, along with interference from adjacent bands, broadband noise from power electronics, atmospheric propagation differences, cost of components capable of operating in the target band, and lots of other stuff.

  6. Re:Spectrum is measured in Hz? on US Wireless Spectrum Auction Raises $44.9 Billion · · Score: 4, Informative

    The space between 100 MHz and 165 MHz would constitute 65 MHz of spectrum. So would the space between 1 GHz and 1.065 GHz, or 1 KHz and 65.001 MHz.

    According to this US government source, this auction was for 1695-1710 MHz, 1755-1780 MHz and 2155-2180 MHz -- a 15 MHz band and two 25-MHz bands, totaling 65 MHz.

    To a first approximation, 65MHz of spectrum gives you a fixed amount of capacity, regardless of its start and end points.

  7. Oh, it was never "crazy"... on Georgia Institute of Technology Researchers Bridge the Airgap · · Score: 1

    As others have already noted, this is an old, old tactic. I'm a bit surprised that you can correlate enough of the broadband scream produced by a modern laptop to tease out keystrokes reliably, but not that suprised.

    It's only "crazy" if you're spending disproportionate time, effort and money to conceal your boring, inconsequential data. And in these days of big-data sieves and ubiquitous surveillance, "boring" and "inconsequential" aren't what they used to be.

  8. Probably not as close as you think... on Brain Implants Get Brainier · · Score: 2

    The thing is, we're getting there. These are no longer science fiction: the path to each of these abilities is very clear. And when these abilities converge we'll have matrix style give-me-knowledge-now and complete VR. Not to mention brain augmentation. This future is far, far closer than it seems.

    I'd love to think that you're right, but to paraphrase the old Sidney Harris cartoon, I think you need to be more explicit in your last step. Even if we could stitch up the whole brain with safe and robust wires and sensors, knowledge encoding is still largely a blank map.

    Of course, broad- and fine-scale read/write hardware interfaces to the brain will give us a big boost toward figuring out the harder stuff. But that's going to be a massive undertaking, and outside of hand-waving "superintelligent machines will take care of it for us" daydreams, it's going to take a very long time.

    I'm pretty confident in this prediction, but it does occupy a place of pride in my display of "things I'd really love to be wrong about".

  9. That subsidiary appears to be managing cash assets. Now, last time I checked, Apple was sitting on an absurd pile of cash, and I'm sure income from it is non-trivial. But it's still likely a drop in the bucket compared to total corporate income, which IS taxed at significantly higher than 0%.

    Bottom line, Apple paid corporate income tax equal to 26-odd percent of their pre-tax income. Feel free to argue that they should be paying more, or less, or exactly that amount. But if you're trying to imply that Apple "doesn't pay tax", or that all (or even most) of their profits are "taxed at 0%", you're just sowing confusion.

  10. Oh, for...

    A corporate tax filing reports corporate taxes, not "income taxes paid by employees".

  11. Re:Tax on Apple Posts $18B Quarterly Profit, the Highest By Any Company, Ever · · Score: 5, Informative

    It looks to me like you've got this wrong.

    According to this Forbes article from 2013, Apple routes all non-US sales revenue through Ireland. That's sketchy on the part of both Ireland and Apple, and offensive to all the other countries that get no cut from Apple's sales within their borders.

    According to this financial statement, Apple paid $9.48b in current US income tax in 2014, $2.15b in current foreign income tax.

    Pooling everything, in 2014 Apple had pre-tax income of $53.48b, $13.97b total income tax, for a net income of $39.51b.

    I don't know how those numbers compare to other large corporations, or "socially responsible corporations", or whatever you want to compare to. But claiming that Apple routes US sales revenues through Ireland, or that Apple doesn't pay tax on its profits, appears to be completely false.

    If I'm misinterpreting these numbers, please post corrections.

  12. 1TB thumb drives for $20? OK, I'll bite. on Ask Slashdot: Best Medium For Personal Archive? · · Score: 2

    You can buy a 1TB thumb drive (Kingston HyperX Predator), but it will cost you around $1K.

    You can buy thumb drives for $20 per, but they'll be 64GB, maybe 128GB if you're lucky and don't mind dodgy manufacturers.

    You can buy a "1TB thumb drive" for $40 or so on eBay, but you'll find that it "redundantly" stores the last few gigabytes you wrote across the entire drive. In other words, it lies about its capacity, and just trashes existing data once you exceed its real capacity (likely 8GB or less).

    Of course, if you're just trying to save "important documents", you probably don't need anywhere near a terabyte, or even a gigabyte.

  13. Lagrange points? on Proposed Space Telescope Uses Huge Opaque Disk To Surpass Hubble · · Score: 1

    They may be thinking of using one of the Lagrange points -- geostationary and stable. But, yeah, at least one component (I'd guess the small one) will need some sort of station-keeping propulsion. Ion drive with a big fuel tank?

    Actually, a half-mile disk would get some significant thrust from sunlight/solar wind. I don't know whether they could use that for station-keeping, or whether it would just be one more thing for them to fight.

  14. Re:Interesting how many people believe... on "Once In a Lifetime" Asteroid Sighting Monday Night · · Score: 4, Informative

    Did your job have you spending a lot of time staring up at the sky?

    If so, were you using an image intensifier, or something else that lets you see things too dim for the naked eye?

    I agree that it's silly for CNN to encourage non-enthusiasts to go out and look for this. It won't be hard for any amateur with clear skies and a small telescope, but for anybody else, (a) they're likely to miss it, and (b) they're likely to be underwhelmed if they do see it.

    But "believe in this crap"? Do you think asteroids are some sort of Illuminati lie designed to keep us in line?

  15. "getting closer and closer to victory..." on Fark's Drew Curtis Running For Governor of Kentucky · · Score: 2

    In the same sense that I'm getting closer and closer to Alpha Centauri.

  16. Re:Not a fan on Government Recommends Cars With Smarter Brakes · · Score: 4, Insightful

    Yes, yes, I'm sure you can imagine any number of situations where your lightning reflexes, superb judgement, and superhuman driving skill will produce a better outcome than some dumb automated system.

    But even if you are much more skilled than the average driver -- and it does seem like 80-90% of drivers are quite convinced that they're "better than average" -- you're still likely to do dumb things behind the wheel more frequently than you do brilliant things behind the wheel. If you have a human brain, you're kind of stuck with that. There are a million things that can distract you, impair you, or confuse you, and any one of them will knock you down from that pinnacle of performance.

    There will certainly be times when an automated system produces a worse outcome than a skilled human driver. But those times will be overwhelmingly outnumbered by the times when it's the other way around. It's really, really hard to reason objectively about risks like this, especially when there's a perceived loss of control involved. But if you don't let objective reasoning drive policy, you're going to end up with more dead and injured people.

    When I was a kid, the debate was over seat-belt laws. There were an amazing number of people who absolutely refused to wear them. "I remember this person who was trapped in a burning (or sinking) car because they couldn't get out of the seat belt!" "I'm too good a driver to get into an accident where I'd need a seat belt to save me!" "If I'm wearing a seat belt, I can't be thrown to safety, so I'll be trapped in the collision!" Yes, I'm quite sure that some people have died because of seat belts. But that number is absolutely dwarfed by the number of people saved by them. It's cold consolation to the handful of seat-belt victims, I know, but you're still an utter fool if you let those few tragedies convince you not to use the belt.

    Please don't let fear of a few extremely unlikely scenarios block a robust solution for an entire class of common problems.

  17. Re:This feels like a bug.. on Scientists Slow the Speed of Light · · Score: 4, Funny

    The good news: we've got a fix ready for deployment.

    The bad news: this fix will force a system restart.

  18. ClickToFlash for me, thanks. on Adobe Patches One Flash Zero Day, Another Still Unfixed · · Score: 2

    There's some Flash content I still want to view. But I want to look at content, not fight to focus my attention away from screaming, flashing, pulsing, squirming ads on every side. If you want me to run your program, make it worth my while. Especially when the platform on which you want me to run it might let it infect my machine.

    Static ads are still fine. I don't much care if you track me and focus them. I'll even click through them occasionally. But I won't let you run down my battery and my brain with animations. I don't care if your marketing macaques say they get more clicks. I've made my choice. I'll never see them.

  19. Of course it does! on Science By Democracy Doesn't Work · · Score: 4, Funny

    Because the majority said so.

  20. Re:Nothing new here on Google Plans Major Play In Wireless Partnering With Sprint and T-Mobile · · Score: 1

    Ting, haha. Founded by TuCows. Remember them? Yeah the shareware website. Might as well get Boost Mobile! A drug dealer burner phone or Clearwire, wait no they went bankrupt right? Or just about any defunct wireless re-seller. Sprint has been pimping out their network and wimax for years now to fly by night companies. Ting most definitely included. Here's a great idea, start a company, pay $20 to Sprint and charge your customers $40, pocket the difference and name your company Ting, or Boost or whoever gives a crap as long as you dont need a contract and can buy phones on the street corner.

    LOL.

    Ting: $6/month/device. All minutes/messages/data are shared buckets, although you can set caps for each device individually. They still have charge by thresholds, not per-minute/message/meg, unless your usage is really huge, but the only way you'll spend more money with them is if you're a data pig.

    We've got five phones with them. Two are pretty much backup/emergency units, and sometimes have no usage at all in a month. One is for a child, and has cellular data turned off. The highest monthly bill we've ever had, for FIVE PHONES, is less than US$75 -- and that's with taxes. Usually, it's closer to $60. If you think the biggies will sell us a plan anywhere near that, well, I'm all ears.

    I'm expecting Google will come in at comparable price points, maybe lower, and crush everyone with their marketing muscle. I kind of hope I'm wrong; I like it that we're getting some actual diversity in available offers, and I'd rather not replace that with yet another monolith.

  21. Re:Why two different network types? on Google Plans Major Play In Wireless Partnering With Sprint and T-Mobile · · Score: 3, Insightful

    If they want to let people bring their existing phones, supporting both networks greatly increases their audience. It can also make a big difference in coverage if you can roam across to one of the big networks.

    This seems like particularly alarming news for Ting, which currently runs over Sprint's network, and is apparently getting ready to add T-Mobile.

  22. Re:Science Fiction as Fact... on Interior of Burnt Herculaneum Scroll Read For First Time · · Score: 1

    Only in the book they were using neutrinos, I think. Lotsa luck with that...

  23. Re:too expensive on Librem: a Laptop Custom-Made For Free/Libre Software · · Score: 2

    Freedom isn't free!

  24. Re:This has been know for a while... on Astronomers Record Mystery Radio Signals From 5.5 Billion Light Years Away · · Score: 3, Funny

    No, no, you're falling into the old fallacy of confusing "information" and "data".

  25. Re:Not much aperture on Exoplanet Hunting NGTS Telescope Array Achieves First Light · · Score: 1

    That's very, very cool. How long are exposures? Are these devices effectively counting photons at each pixel?

    I'm still waiting for that sensor that reports timestamp, energy, angle of incidence, and x/y coordinates for each photon that hits it. THEN the fun can start.