I dont know Allen, as someone who has been teaching others the ways of my martial art you would be surprised how many people dont know how to throw a punch without breaking their hand in some way.

Some people punch with their thumbs in their hand, others with their fingers balled up and their thumb straight, some people hit with their middle phalanx knuckles, and most commonly people for people who can form a fist right, they hit with all four of their knuckles rather than the first two of your pointer and middle finger. Your ring and pinky finger's knuckles will break like glass. I learned that one the hard way lol.