I was trying to be lighthearted. The point is : Without agriculture no massive carbs source. Without carbs, long distance running is a loosing proposition (you cant replenish the carbs needed even when catching the prey). Agriculture is 10k years old Persistent hunting is supposed to be the factor leading to homo... basically from Erectus 2 millions years ago, to sapiens , 1 millions years ago. Once a Sapiens, with sweat, hairlessness, plantar stuff, gait, and all, you're already the result of millennia of selection gained through persistent hunting (allegedly). But you are right , actually (while using agriculture) the Tarahumara can complement their diet with some antelope by running after them. It was not an option for Erectus (who had not access to such carbs source)