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aerodude

HN member
Joined
Thu, Aug 30, 2018, 1:26 PM UTC
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73
Public activity
22 items

About aerodude

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Recent public activity

  1. comment
    Comment #25237290

    Having a quick read, they're pointing out that the Bernoulli distribution is only supported for values of 0 and 1 (i.e. it's binary), whereas pixel values for a grayscale image are…

  2. comment
    Comment #22516520

    The number of subgraphs increases exponentially with the number of additional layers (and neurons). If you started off with a network the size of the final pruned network, you woul…

  3. comment
    Comment #21932549

    I'd go even further than that and argue that the reason vegan and vegetarian diets have taken off as much as they have is because they became status symbols in the 90s / 2000s.

  4. comment
    Comment #21625570

    Rockets have an exhaust with constant velocity, and they expel mass in the form of fuel. It's this expulsion of mass that generates the force that propels the rocket. Taking a forc…

  5. comment
    Comment #21172809

    >If you're in the USA and fill your tank once a week, you probably spend ~$2000/yr in gas. And that's how much you'd save in gas if you went electric. The electric bill makes a big…

  6. comment
    Comment #20975239

    I think this is the big one. Consoles and CoD dominated the market for a long time. Has the pendulum swung back towards PC games? I have to confess, it's been a long time since I p…

  7. comment
    Comment #20968753

    >50km a day in charge capacity is the absolute best-case scenario. In reality you should count on half of that. I'd count on even less than that. Industrial solar farms average a c…

  8. comment
    Comment #20671612

    > So successful products optimise for the UX of a user who doesn't yet know how to use the product well. And such users really love touchscreens. I think the problem is that touchs…

  9. comment
    Comment #20671552

    Wouldn't it be easier to point a camera at the windshield and detect a change in opacity? I would think that's a far easier problem to solve than, say, facial recognition.

  10. comment
    Comment #19890836

    Wouldn't both of those solutions undermine the advantage of the airframe, which is the fuel cost savings of the larger engines? That said, I think seating pitch and spacing is defi…

  11. comment
    Comment #18822105

    > Also, if you have infinite energy, there are many things you can do to cool off. Everyone will be able to set their own preferred temperature. Jesus. Someone failed thermodynamic…

  12. comment
    Comment #18822099

    Ummm... if you have infinite power to pull carbon from the atmosphere, don't you also have infinite power to launch radioactive nuclear waste at the sun using mass-drivers? Sounds …

  13. comment
    Comment #18721987

    Faster hardware will help, but I'm not convinced that it's the answer. OpenAI Five used on the order of 2000 years of experience to train their agent. There are clearly still huge …

  14. comment
    Comment #18721963

    I think this is the real answer. When we developed flight, the measure wasn't "can we fly like birds?" We still haven't achieved that even today, but we fly in otherwise unimagined…

  15. comment
    Comment #17895267

    For the majority of people, a car is a utility item; car buyers tend to price in the worst case scenario when buying a new vehicle. Statistical arguments don't really work in these…

  16. comment
    Comment #17882109

    I didn't just compare with a 747 -- the battery numbers I ran were for the business jet. The 747 obviously looks far worse. If you want mass for a 2 hour journey in an electric bus…

  17. comment
    Comment #17882012

    You're right, this is an important clarification. Airlines like smaller airframes that are easy to fill, have fewer engines, and they're okay with breaking journeys up into multipl…

  18. comment
    Comment #17882000

    Yeah you could; you would probably place the batteries in the wing where fuel is located, which potentially has benefits. I was pointing out that the reasoning was flawed. The engi…

  19. comment
    Comment #17877071

    Maybe, though you probably still want to fly above the weather, which puts a lower bound on your power requirements. To get above the weather, the energy needed is m g h plus whate…

  20. comment
    Comment #17876944

    Gonna comment on your last statement here. The reason aircraft cruise so high is because 1) it's efficient. Flight paths are heavily optimized, and while you spend energy getting u…

  21. comment
    Comment #17876784

    Combined cycle gas turbines are actually higher efficiency than this. The current state-of-the-art is somewhere around 63% thermal efficiency.

  22. comment
    Comment #17876737

    The first paragraph is incorrect. The wing has to be built to withstand lift, which far exceeds the weight of the engines. The weight force of the engine typically counteracts the …