The cognitive dissonance in that statement is blinding. Even in the pre-agrarian hunter-gather millennia of human existence, human societies the world over independently figured out housing, carried the knowledge for fire and the wheel, had intensely complex (relative to every other species on the planet) communication and social skills. They all came up with ways to develop knives, arrows, cooking+eating utensils, protective clothing, complex hunting strategies, etc.
Like, yeah...they didn't have computers in front of them, but all of the inate skills that allows modern humans to conceptualize, build, repair and utilize those things existed just as inately in them. You could teach one of them about things piece by piece...you'll never be able to do that with even a chimp, let alone a cow.