Seriously?
So all those stories of people sustaining themselves on what they grow/raise themselves are just stories? The agricultural revolution that allowed humans to transition from hunter/gatherer societies to modern civilization never really happened? If it takes more energy to produce food than we actually get from the food, why haven't we all starved to death--well, how do we exist in the first place?
Well... what can we expect from someone who can't tell the difference between legitimate science and wild speculation...
” If it takes more energy to produce food than we actually get from the food, why haven’t we all starved to death—well, how do we exist in the first place?”
I know this is complicated for a government scientist.
The “potato” point was a metaphor. If agriculture were like biofuels it would take two potatoes of energy to get one potato to eat and everyone would starve to death.
“Well... what can we expect from someone who can’t tell the difference between legitimate science and wild speculation...”
What can we expect from a big-government scientist who cannot tell the difference between something economically viable, and something powered by government funding.