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User: Ihlosi

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Comments · 4,892

  1. Re:your sig on Surviving in Space Without a Spacesuit · · Score: 1

    "Consent" is the magic word. Animals, pretty much by definition, cannot.

  2. Re:you're making a joke but on Charging the Unhealthy More For Insurance · · Score: 1
    I don't know why they are using BMI anymore.

    Because height and weight are much more easily measured than volume or surface area.

  3. Re:Mostly OK on Charging the Unhealthy More For Insurance · · Score: 1
    Then they lose inches all over their body, except on some key measurement places, but not on others, and it throws their BMI all off.



    Err ... what exactly doe they do in the army that can change your height by several inches ? Height and weight are the only two measurements that factor into the BMI.

  4. Re:ow! on Surviving in Space Without a Spacesuit · · Score: 1
    boiling body fluids? sounds painfull



    Actually, it's not. They're only referring to bodily fluids that aren't in some sort of vessel, for example the saliva in your mouth. And the "boiling" really means "rapid evaporation" - it will actually cool off the surface where it happens.


    So, you'll feel your mouth get really dry and somewhat cold.

  5. Re:So why do astronauts bother with gloves? on Surviving in Space Without a Spacesuit · · Score: 1
    If it's not much cooler than my fridge at home, why not just go out there with bare hands so they can fiddle around a lot better?

    Because it's much, much easier to keep an environment sealed when no part of the seal is human skin.

    Keep the rest of the body all cosy, in a breathable atmosphere, but surely it's ok for there to be no oxygen getting to the outside of my hands?

    Actually, todays spacesuits are basically decades-old designs. Work on a skin-tight spacesuit is currently going on, but nowhere near a practical result.

  6. Re:next time on Surviving in Space Without a Spacesuit · · Score: 1
    But perhaps you would not feel like you were suffocating before you passed out.

    You don't need to hyperventilate in order not to feel like you're suffocating when in a vacuum (or any oxygen-free, virtuall CO2-free atmosphere). As long as your body can happily dump its CO2, it won't raise any alarms.

  7. Titan A.E., too. on Surviving in Space Without a Spacesuit · · Score: 1

    No text.

  8. Re:15 seconds? on Surviving in Space Without a Spacesuit · · Score: 4, Informative
    The lungs can't 'extract' oxygen from the blood, can they?

    Lungs can't extract anything. Gas exchange in the lungs is purely driven by diffusion, which moves gasses from areas with higher partial pressure to those with lower partial pressure.

    In Earths atmosphere, the partial pressure of CO2 in your blood is higher than in your lungs, so CO2 moves from your blood to the air in your lungs. The partial pressure of oxygen is higher in the air in your lungs than in your blood, so oxygen moves from the air into the blood (where it oxygenates the hemoglobin in your red blood cells, thereby keeping the partial pressure lower than it would be, allowing more oxygen to be taken up by the blood than would be possible if the oxygen simply went into solution).

  9. Re:Umm... pressure? Fluids? on Surviving in Space Without a Spacesuit · · Score: 1
    Could someone tell me why the blood should not boil immediately due to zero atmospheric pressure but having essentially body temperature?

    The same reason why your blood doesn't suddenly just run out of your body - it's in your blood vessels, which are elastic and sealed.

  10. Re:Umm... pressure? Fluids? on Surviving in Space Without a Spacesuit · · Score: 1

    This is not completely theoretical; there have been a few exposures to near-vacuum (on the ground). Russia once lost a group of cosmonauts due to some sort of relief valve opening too early (at 65 km altitude) during re-entry. So, not quite in space, but close.

  11. Wow, and TFA is wrong, too ! on Surviving in Space Without a Spacesuit · · Score: 3, Interesting
    At most, an astronaut without a suit would last about 15 seconds before losing conciousness from lack of oxygen. (That's how long it would take the body to use up the oxygen left in the blood.)

    First piece of BS. No, your body doesn't use up the oxygen left in the blood in 15 seconds. In a vacuum (or, more broadly speaking, in any condition where the partial pressure of oxygen is lower in the lungs than in the blood), the gas exchange in the lungs is reversed - your blood will actually become deoxygenated while passing through your lungs. After 15 seconds, your brain will get hit by a blood supply that is pretty much completely deoxygenated - it's lights out then.

    And then the part about air embolism - the pressure difference from going from the inside of a spacecraft (which is most likely pressurized at less than one atmosphere) to a vacuum is much lower than the pressure difference experienced by a scuba diver surfacing from a depth of, say, just 12 meters. "Vacuum" might sound nasty, but it's the pressure difference that is the problem here.

  12. Wow .. this is news ? on Surviving in Space Without a Spacesuit · · Score: 1
    And for nerds ?


    Any nerd should know by now that spectacular explosive decompression of the human body in a vacuum is a Hollywood special effect that has nothing do with reality. If you didn't know that ... you're not a nerd. Turn in any nerd or geek license you may have in your possession.

  13. What's one more nuke ? on Nukes Against Earth-Impacting Asteroids · · Score: 1
    ... at an asteroid. Asteroid deflected, yay us, go team. Weeks later, as radiation rains down from on high, we look back on our decision as "ill-planned" and "misguided." This is a good thing? I mean sure we avoided a mass extinction, but we caused another. Just my $0.02.



    So what ? We've already set off dozens, if not hundreds of nukes all over the planet (and some in space, too). One more (especially one that detonates really, really far away from Earth) won't make things that much worse.

  14. Re:Great. Just great. on Mars Phoenix Probe Successfully Launched · · Score: 4, Insightful
    Think how many people could have been fed with this money.



    Dangit, do you have to be so pessmistic ?


    Think about how many guns and bombs and other things that actively make peoples lifes miserable will not be bought with this money.


    There, you can start cheering now. I'm all for space exploration because it takes money that would otherwise most likely be used for killing people.

  15. Re:Robot? That Ain't a Robot- THIS is a Robot. on First Armed Robots on Patrol in Iraq · · Score: 1
    "No plan survives contact with the enemy."



    Yes. But having a plan at the beginning and then adapting it to the situation is still better than thinking that a plan isn't necessary because everything will be fine and dandy after "Mission accomplished".

  16. Re:Robot? That Ain't a Robot- THIS is a Robot. on First Armed Robots on Patrol in Iraq · · Score: 1

    Here's a thought. If the people don't really believe in the cause, why not blame the bosses? The regime that sent the army out there despite the wishes of the people?

    The people had their chance to vote their regime out of office. Apparently, they thought their regime was doing a good enough job to keep doing it for another four years.

  17. A good coverup ... on First Armed Robots on Patrol in Iraq · · Score: 1

    "We're really sorry that they're dead, wife, kids and all. We just sent the thing in there and it started shooting all on its own before we could turn it off ! Must have had some kind of malfunction."

  18. Re:Devil's advocate on A Year In Prison For a 20-Second Film Clip? · · Score: 1
    Total outcome: Hassle for everyone and shitload of money lost all around.



    You forgot the lawyers.

  19. No infringement here. on Firm Sues Sony Over Cell Processor · · Score: 1
    It describes a high-speed computer that breaks down a program 'into smaller concurrent processes running in different parallel processors' and resynchronizes the program for faster processing times ..



    Anyone can see that the Cell processor does not infringe this claim. If the computer did the breaking down thingie, then the Cell processor wouldn't be such a pain to program.

  20. Re:Exactly what America needs! on Higher Tuition For an Engineering Degree · · Score: 1
    That is bullshit. Absolute bullshit. As in, it's complete and utter fabrication.



    Of course. But if you spend weeks figuring something out that you could have found in every standard textbook, then you're not a genius (like the people who figured that out when it wasn't in the textbooks yet), but a waste of your employers money.

  21. Needs more fixin' on US Blocks Entry For German Black Hat Presenter · · Score: 1
    The current administration of the United States has made "fighting terrorism" their only priority.

    The current administration of the United States has made claiming to be "fighting terrorism" their only priority.

    There. A little bit closer to reality.

  22. Re:Meanwhile.. Walmart is in Spanish on US Blocks Entry For German Black Hat Presenter · · Score: 1

    But China is under US control now, economically.

    Wag the dog.

  23. Re:I don't want to go to the US anymore. on US Blocks Entry For German Black Hat Presenter · · Score: 1
    In Beijing they just looked briefly at my passport and waved me through.



    They probably know that you aren't going to work for lower wages than a Chinese citizen.



    (sure, if I had committed genocide recently, I most certainly would tick the "yes" box...),



    They don't expect you to answer these questions honestly in case you would have to answer "yes". The purpose of this form is merely that they can slap you with another charge (making a false statement on the form) if you're put on trial for anything at all while in the States, thereby guaranteeing that you'll land in prison.

  24. Re:To Germany! on US Blocks Entry For German Black Hat Presenter · · Score: 1
    I hope at least they didn't charge him for the flight back.. HahahaHAHAHA*rotfl* ... that was a good one.

    You can bet they charged him for anything that wasn't covered by his ticket.

  25. Quotas. on US Blocks Entry For German Black Hat Presenter · · Score: 1
    Why not let him fix the technical flaw making the contract with his company?



    I would suspect that immigrations has quotas of how many people they need to reject. If they haven't reached their quota yet, then anyone who doesn't have his papers correct the first time is fair game.