We do know God was personally regretful and disappointed in what he had done.

tis a bit strange God would be effected in such way if all was going to divine plan.

Genesis 6: (KJV)

5 And God saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart
was only evil continually.
6 And it repented the Lord that he had made man on the earth, and it grieved him at his heart.


-Bulletproof and Waterproof don't mean Idiotproof.