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User: es330td

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Comments · 412

  1. Re:Good. on In New Study, HIV Prevention Pill Truvada Is 100% Effective · · Score: 1

    After AIDS, there was NRS, after NRS, there was UBT.

  2. Re:And? on Gaming Computers Offer Huge, Untapped Energy Savings Potential · · Score: 1

    that's a savings of $126.

    I am pretty certain the person who spent thousands on a top end gaming rig does not particularly care about saving $126 over the course of three years.

  3. Re:book was boring on The Real NASA Technologies In 'The Martian' · · Score: 1

    Reaching way, way back (with help from the Interwebs)...

    Hydrazine (H2NNH2 or N2H4) has a molecular weight of 32.05 g/mol and a density of 1.02g/cm^3

    1L of Hydrazine = 31.83 mol

    1 mol Hydrazine => 2 mol N + 4 mol H

    4 mol H + 2 mol O => 2 mol H2O

    31.83 mol Hydrazine => 63.66 mol H2O

    63.66 mol H2O has a mass of 1146g or 1.146L at STP

    I think I got that right.

    While his mental calculations weren't accurate to four decimal places, from a Fermi calculation standpoint he was close enough to the actual value to act on his estimate. He took a bunch of shortcuts but his logic "each hydrazine molecule yields two hydrogen molecules" is sound which means that two liters of liquid hydrogen combined with sufficient oxygen to make water should yield roughly two liters of water, which it actually does within about 10%.

    There are certainly other examples of deviation from factual science but this one doesn't seem that bad.

  4. Re:book was boring on The Real NASA Technologies In 'The Martian' · · Score: 1

    Did you miss the part where this book is fiction? You are aware that authors get to make up stuff or fudge reality in that kind of book, right?

  5. Re:Yes on Do You Have a Right To Use Electrical Weapons? · · Score: 1

    How exactly does one conceal a broadsword?

  6. Re:Makes me think about North/South Korea border on Drone Drops Drugs Onto Ohio Prison Yard · · Score: 1

    The DMZ is more than 2 miles wide; a drone would be noticed long before it got to the border. I have no doubt that Great Leader 3.0 would consider that a hostile act and respond with rounds lobbed over the border. I don't think anybody in South Korea is excited about antagonizing the crackpot dictator to the north.

  7. Re:HAHAHAHA! on Will Autonomous Cars Be the Insurance Industry's Napster Moment? · · Score: 1

    I would be genuinely surprised if rates drop

    I would be very surprised if they don't. Rates are based on claims paid and if claims go down significantly then the insurers will have no choice but to lower rates.

  8. Re:Balancing Act on Will Autonomous Cars Be the Insurance Industry's Napster Moment? · · Score: 4, Insightful

    as well as whatever profits the company can get away with

    Insurance companies are regulated by the states which cap their profits. It isn't about what they can get away with, they get what they are allowed. That is the devil's bargain they make for being the provider of a product required by law.

  9. Re:Electric is Evolution. Driverless is Revolution on Are We Reaching the Electric Car Tipping Point? · · Score: 1

    The most efficient input source for hydrogen is methane. CH4 + O2 -> 2H2 + CO2 So now we will use hydrocarbons to make hydrogen. Alternately we could use hydrocarbons to first make solar cells but at the end of the day, CO2 is coming out somewhere.

  10. Re:Electric is Evolution. Driverless is Revolution on Are We Reaching the Electric Car Tipping Point? · · Score: 3, Insightful

    The problem with battery power is that as a mobile storage device it absolutely sucks compared to liquid hydrocarbons. Diesel has an energy density of 35 MJ/L. A rechargeable lithium ion battery has a density that ranges from 0.9-2.63 MJ/L. If advances in technology doubled capacity and then double it again it would still only be 1/3 as good as diesel as a storage medium. Making matters worse, the individual batteries used in a Tesla weigh 2.64 kg/L, where Diesel weighs 0.899 kg/L. Even if the battery had the same energy density it would weigh three times as much. (Yes, I know the diesel engine has mass for which I didn't account. I am only pointing out the energy sources themselves.) Musk's plant may be able to bring down the cost to make a battery but scale doesn't make the battery itself better. I can also say with a high degree of confidence that if this much money is being sunk into a lithium ion plant then no significant alternative is on the horizon, unless the whole point of the factory is home batteries, not car batteries.

    Proponents keep saying that advances in battery technology will make them competitive with hydrocarbons. What they don't say is that in a world wherein a 5% improvement is a big deal the advances required exist in the realm of science fiction.

  11. Re:Error 1 on Are We Reaching the Electric Car Tipping Point? · · Score: 1

    Tesla's charging network is free only because S owners are paying a significant premium for the vehicle allowing Tesla to build said network. When (not if) other mfrs have electric cars and everyone has to compete on cost a free charging network will come with a higher price tag.

  12. Re:It's easier to ask for forgiveness than permiss on California Legislation May Allow First Responders To Take Out Drones · · Score: 1

    It can't be that hard if it is in range. These things move much slower than a goose or duck and one high energy lead pellet to a propeller will probably put it out of service. These things are an awfully big target compared to the dove and quail people hunt.

  13. Re:It's easier to ask for forgiveness than permiss on California Legislation May Allow First Responders To Take Out Drones · · Score: 1

    In legal terms this is known as "joint and several liability." In English it means "everyone in sight is on the hook until the amount of the judgment is satisfied."

  14. Re:I would sell it on Ask Slashdot: If Public Transport Was Free, Would You Leave Your Car At Home? · · Score: 1

    Let's not single out the SUV's. A bicycle loses against even a Smart ForTwo...

  15. Re:Oh good.... on The X-Files To Return · · Score: 1

    I could see there being a good story basis in having them need to come back to look into something from the past. Think of it like the British show New Tricks, wherein the solution to the cases hinge on the retired detectives knowledge of the time in which the event occurred.

  16. No more OJ car chases on Laser Takes Out Truck Engine From a Mile Away · · Score: 2

    Affix one of these to a police helicopter and that will be the end of police chases. Pinpointing the hood of fleeing vehicle for take out will be trivial.

  17. Re:The Keystone Pipeline already exists on Obama Vetoes Keystone XL Pipeline Bill · · Score: 1

    In addition to the $5B GS got from Buffet, GS also got $10B from the US Treasury. For the use of the Treasury's money GS paid about 23%. For the use of Buffet's money the cost was around 100%. I don't know what Buffet did, but GS would not have paid four times as much to use Buffet's money unless it truly was a deal they could not refuse.

  18. Re:The Keystone Pipeline already exists on Obama Vetoes Keystone XL Pipeline Bill · · Score: 2

    They absolutely deserved it. I think the executives of all the money center banks should be handed as a group over to ISIS, or better yet, to the average Mom & Pops that got hosed by the mortgage meltdown.

  19. Re:The Keystone Pipeline already exists on Obama Vetoes Keystone XL Pipeline Bill · · Score: 4, Insightful

    The only reason people don't think Buffet is flashy is that they don't understand flashy. In these days of celebrity bling people think with his money Buffet should be driving a platinum plated bespoke Bentley driven by a staff of nude Swedish supermodels. What people don't understand is that the deal he made with Goldman Sachs for the preferred stock and warrants to bail them out in 2008 is the most ostentatious display of wealth in the history of mankind. He forced the so called Masters of the Universe to accept a deal that must have made the corpses of Marcus Goldman and Samuel Sachs puke in their graves. $5 BILLION in preferred stock with a 10% dividend and warrants to buy another $5B in GS stock at $115 a share. To put this in perspective, there are 12 countries in the world whose GDP is less than the amount GS had to pay Buffet in annual dividends on that preferred stock. The profit on the warrants rank Buffet as the 154th out of 194 biggest economy in the world. He used his wealth to perform the equivalent of anal rape with a spiked baseball bat in front of a live tv audience to the most powerful financial firm in history. It doesn't get flashier than that to those that understand what he did.

  20. Re:Not too surprising on Attention, Rockstar Developers: Get a Talent Agent · · Score: 2

    My father was an officer in First Cavalry. Casually over breakfast one day I said I was working with an RPG and he nearly sprayed coffee over the table. I learned that day RPG can mean very, very different things to different people.

  21. Re:Parts on Smartphone Theft Drops After Spread of Kill Switches · · Score: 1

    You've just explained the problems common to the manufacturing business cycle. As an economist, I am always amused when I see criminal enterprises have to start operating like a business because eventually the same issues come into play. Stealing one thing to sell is easy. Trying to make an ongoing living off it becomes real work.

  22. Re:true and faithful account on Using Naval Logbooks To Reconstruct Past Weather and Predict Future Climate · · Score: 1

    Those people sank, and we do not have their log books. :-P

    How nice of them to self select their data out of the dataset via the Darwin Process.

  23. Re:This article needs fact checking on Scotland Builds Power Farms of the Future Under the Sea · · Score: 1

    So TFS is still correct that it's about a 1000:1 ratio.

    Absent evidence to the contrary he got lucky and does not get credit for it.

  24. Re:Compelling, but a mix still better... on NASA's HI-SEAS Project Results Suggests a Women-Only Mars Crew · · Score: 1

    However I'd argue in a truly remote environment where no external help is to be had, that the raw strength a few very fit males could provide could be useful in an emergency.

    Just send up a container in advance with a couple Caterpillar P-5000 Work Loaders.

  25. Re:What's the big deal with intelligence? on Scanning Embryos For Super-Intelligent Kids Is On the Horizon · · Score: 2

    Really? You want a kid with no ambition? One that will happily work at a dead-end job and bum around with his friends rather than put in the effort to be a better person.

    As you go throughout your day, look around you and try to keep track of people in so called "dead end" jobs as a proportion of the people you see. The world in which we live depends on a certain percentage of the population doing those jobs: garbage truck worker, toll booth operator, road maintenance crewmember, janitor, etc. While I certainly hope that my children excel, it is more important to me that they be happy doing whatever it is they are doing. I am reasonably successful and come from a family of very successful people. My father is content to know that me and my siblings were given opportunities and support and that what we ended up doing was much less a measure of our success than our qualities as parents, spouses and members of our community. As long as my kids choose, rather than settle, I can support them in what ever they do.