Talk:Factor e Farm Energy Cycle

I strongly suggest measuring labor by time rather than calories burned. Level of skill per person is another factor that makes both calories and time suspect, but I believe time is less so than calories. Labor time is far easier to measure than calories burned. It makes sense to measure energy usage of machines because they are designed specifically for a task, whereas human calories may be burned for reasons other than labor. In sum, a medical doctor and a life long coal miner may burn the same amount of calories. You trust the medical doctor; even if he may burn more calories per hour than the coal miner. Is that sensible?

-Nathan