Nothing is quite as effective as a feint. In its delivery, there is skill and showmanship. It's great theater. Magicians use it to fool their audiences.
Fighters use it to make fools of their opponents.
Or fools of themselves. Whitaker was a master of the art. He was often criticized for his lack of power, but the critics never seemed to get it. The real power was in his ability to confuse an opponent into acting on an illusion. More than one of Whitaker's unfortunate victims often found themselves so turned around that they looked like puppets twisting on strings that were crossed for a purpose.