An odd hypothesis, I think. I don't think our ancestors were any less practical than us. Probably a great deal more practical, in fact. You reference Plato, bu

An odd hypothesis, I think. I don't think our ancestors were any less practical than us. Probably a great deal more practical, in fact. You reference Plato, but you could easily phrase it in the other direction. "From Roman engineering to Wittgenstein blithering on about meaning."