Originally Posted by Ziggythewiz
Ah, but that's not over unity. How much power did it take to grow the rice that you fed your peasants to carry the wood up that hill?
Actually it's solar and wind power, since the wind blew the seeds there and the sun provided power to make the trees grow. And I had to use a lot of power to cut the trees into logs and split them. I could possibly use the tractor's batteries for an electric chainsaw, but that would greatly skew the results. Then again I could use the wood with a steam power plant on the tractor, to avoid using fossil fuels.
Also, all sources of power on the earth are ultimately derived from Solar Power
which in turn is nuclear fusion. And nuclear fusion in stars originally formed radioactive elements that we use in fission reactors.