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Worldbuilding

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    $\begingroup$ I don't have a good reason to flag your question. However, it would be helpful if your specific question were asked (or repeated) in the body, so that what you want to know is clear to other readers who aren't necessarily invested in your problem. $\endgroup$
    – Hunting.Targ
    Commented Jan 23 at 5:06
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    $\begingroup$ "I tried to do some math with help and the answer we got is that a 1kg 700 watt-hour battery would run the robot for decades." It would really help to show your math so we can point out where the error is. In addition, going through it and re-writing it in another form may make something stand out. A lot of times when I'm stuck on a problem and ask a friend to help me work it out I figure out the issue while explaining it to them. $\endgroup$
    – Jason Goemaat
    Commented Jan 23 at 17:57
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    $\begingroup$ A 700 Watt-hour batteries worth of power. thats only 602.294 KCalories ('Calories') That would last a human less then 1/3 of the day. If the human was just sitting there doing nothing. $\endgroup$
    – Questor
    Commented Jan 24 at 15:29
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    $\begingroup$ @Matthew That's fair. metabolic resting state of an adult human male is 1300 Calories, on average some people are higher some are lower. So its really more like half a day. But my point was "where is the 700 watt hours number coming from? $\endgroup$
    – Questor
    Commented Jan 24 at 23:33
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    $\begingroup$ @DKNguyen A Human is also performing self repairs during that time. A robot isn't and a robots internal self maintenance/repair might be even more expensive then a humans. $\endgroup$
    – Questor
    Commented Jan 25 at 16:02