I would refer you to the parable of the widow's mite and point out that, in spiritual terms, my ancestors' donations were of far greater value than those of Lorenzo de Medici.
I said in all probability it was an accident, so what constitutes infinitessimally small i don't know.... the balance of probability, with an old structure like that, loads of generators having been used up on the roof, and the restoration work that had been going on would lead me to believe that is the likely outcome.