Tom Smith had a link about An End To The Toilet Seat War, which reminded me of something…

Bizarrely, I managed to prove to Caroline once that if we both leave the seat where we needed it to be, then she’s more likely to find the seat down when coming to it next time, so she actually gets the better deal.

The maths really works too :)

I suspect that this should have some sort of fancy mathematical name with the words “Sam’s” and “Theorem” in there somewhere. Any suggestions?