Dyer-Bennet’s Fourth Law

“Don’t waste your time arguing about allocating blame.  There’ll be enough to go around.”

I believe there never was a third law.  The first and second seem to be lost (I vaguely remember that at least one of them was a simple theft of one of the classics).  If anybody remembers, or especially has or can find archived posts where I cite the earlier laws, I’d be fascinated to hear.