I understand what charges and a blocking fouls are. I was referring to the more controversial calls in which an offensive player could get bumped, tipped, or whatever, and people would argue the degree of the foul, or if it was even a foul at all. When you hear the announcers disagreeing on a call, then somethings wrong.
"A standard for assessing if that contact was enough to warrant a foul call: Did it affect the players' 'speed, quickness, balance, or rhythm?'"
In this case for instance, many people would have their own opinions as to what effects a player "speed, quickness, balance, or rhythm?". But I guess the rules can't get anymore concise than that.