hey protomyth, author here. Haha, I see your point abt the conservation of energy. I assumed that everyone would know that law, so I didn't address it specifically. Obviously, the return energy would be less than the expended.
I guess to assume really does make an ass out of u and me.
It's not so much for the HN audience, but the next generation of article down the chain will use that paragraph as a basis for their headline. It is by far the catchiest and I don't think they will be explicit about conservation of energy with their readers.
I guess to assume really does make an ass out of u and me.