See #58 again and follow the link to the Genesis Chapter 3 thread. We already had our "enlightenment" in the garden of Eden before we made our choice and participated in Adam's sin of rejecting the Truth of God and exchanging it for THE lie. It was only after that that our "foolish hearts became darkened".
Ah, but really understanding the Fall would obviously require regeneration....
(See also John 8 for more insights on Arminianism, of course.)