I don't want to be picky but I will anyway
MTD, he said call a block and charge at the same time. You said have a block and charge at the same time. While I can agree that you probably can't have a block & charge at the same time it can be called at the same time. Someone will correct me if I'm wrong but this became a big deal when it happened during a college game. In this atmosphere:
1. Hearing a double whistle can be hard
2. Selling the call immediately can be very important
3. Huge egos are involved
4. Mechanics are required, most of the time, to get you there and then you can do whatever once you have the big schedule
I also want to point out that this can often times be avoided if we are mechanically sound and really work at the art of 3-man (person). It happens too many times in a clearly defined primary (not in the middle of the paint). For instance if I'm at the C on a play and there is a crash in my primary I want to be able to go straight to my "mechanic"
If the same play happens and I'm at the Lead, IF (and I mean IF) I have a whistle I will have a fist and my eyes will immediately go to my partner to look for a hammer or mechanic. If I don't do anything at the Lead I can always come in with a delayed whistle if need be. I'm of the strong opinion that a Blarge is often a product of the "let's just get it right" attitude. "Getting it right" should start with the beginning which is do we know the proper 3-man mechanics. Knowing and pregaming the proper mechanics could reduce the risk of this call taking place. Now, will it totally remove this sort of double whistle? No. IMHO, this is one thing the NBA clearly does better than HS and college; look where your partners are not looking.