I think this analogy is flawed. It's more apropos to the "John Henry" comparison, but most of human labor is not of that type since the industrial revolution. H

I think this analogy is flawed. It's more apropos to the "John Henry" comparison, but most of human labor is not of that type since the industrial revolution. Humans are not walking packages the entire distance; we've already implemented mechanical and energy advantages in the form of road vehicles. Say someone drives a 200 horsepower car. That's roughly 1200 kWh/day of available mechanical power.