QED

The proof of the theorem [...] is in the refereeing.
Reuben Hersh, “Prove -once more and again”, Philosophia Mathematica, Vol. 5, No. 2 (1997), pp. 153-165
Zo beschrijft Hersh ons idee van wiskundig bewijs in de lijn van de zegswijze “The proof of the pudding is in the eating.”