That may be true, but it may also be true that systemic constraints (availability of arable land, climate, population density, the slow inter-generational proce

That may be true, but it may also be true that systemic constraints (availability of arable land, climate, population density, the slow inter-generational process of plant and animal domestication that makes agriculture economical), held humanity back longer than would have been possible if millions of cavemen were appeared overnight in the Indus valley with modern wheat in hand.