Haven't read the archive because it won't load, but from what I did read, wouldn't really say they're in the stone age unless they are doing something more adva

Haven't read the archive because it won't load, but from what I did read, wouldn't really say they're in the stone age unless they are doing something more advanced than hitting nuts with unmodified rocks. If they are modifying rocks or using rocks to modify wood (like to make a stabby stick), then I'd give them the credit. Regardless, pretty neat.