Fed Balk Rule Question

[Phil Vivenzio]

I have asked this question constantly, and I still do not get a understandable answer. It is my understanding that the purpose of balk rules is to protect the runner from being deceived. One of the situations in Fed ball where a pitcher upon getting set leaves his glove higher than his chin, this is a balk. I do not see where this move is deceptive. Does any one know why this rule was instituted? And if no one does, does anyone know what steps must be taken to get this rule changed?

Thanks in advance for anyone's input.

Regards
Phil Vivenzio