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User: zqwerty

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  1. Re:Look at the solar system on A.I. Developer Challenges Pro-Human Bias · · Score: 1

    Intelligence is the ability to understand, as you can see a lot of people do not have it.

  2. Re:What is "intelligence" on 10 Years After Big Blue Beat Garry Kasparov · · Score: 1

    Intelligence is the ability to understand.

  3. Re:Selective breeding on New Explanation For the Industrial Revolution · · Score: 1

    Intelligence is the ability to understand.

  4. Re:why don't they... on New Record For Solar Cell Power Efficiency · · Score: 2, Insightful

    Its 20 years since I looked into solar cells in my engineering job, but the figure quoted above must be close to theoretical maximum because solar cells amount to a forward biased diode and can never get to 50% efficiency, they also have poor temperature performance which falls off rapidly as they get hotter, so enclosing them and reflecting more sunlight onto them is exactly the wrong thing to do, they run most efficiently when cool. As said in this thread the big problem is cost and having to store the electricity when the sun is not around at night.