[PhanthomOps]

Occam:

1) Who teaches a baby to crawl?
2) Who teaches a baby to reach up, pull itself up, and try to stand?
3) Who teaches a baby to stand?
4) Who teaches a baby to walk? Yes, we hold their hands for support, but only after they display the ability to stand and then to attempt to walk.
5) Who teaches a baby to reach up and try to touch the toy hanging on the crib?
6) Who teaches a baby to naturally suck on its' mothers breast or a bottle?
7) Who teaches a baby to once it can crawl and walk around to investigate its' surroundings?
8) Who teaches a baby to utter sounds, or to coo, to laugh, to cry?
9) etc.

No one - therefore, I conclude that this must be innate - originating at birth.