1) On a fake field goal when the ball is snapped to the holder whose knee is on the ground, why is the play not blown dead at that point?
2) On a silent snap count when the quarterback pumps his fist, why isn't false start called? Oregon's QB comes to mind here. He almost hits the ground with his fist he pumps it so vigorously.


The holder is an exception written into the rule. It used to be that a fake had to start with the holder's knee slightly off the ground (at least I think I remember that) which obviously gave it away.
I don't know about the hand motion.