Cows can walk minutes after they are born. I guess they're even smarter. You might argue that the walking calf is not intelligent because it came preprogrammed

Cows can walk minutes after they are born. I guess they're even smarter. You might argue that the walking calf is not intelligent because it came preprogrammed to walk, but human babies will reflexively start making stepping movements when you hold them upright and let their feet touch the ground. I think it's ridiculous to argue that your son somehow learned to walk through observation and reasoning alone.