The Toilet Seat Debate Settled
The Science Creative Quarterly, never one to disappoint, has a mathematical treatment of the great toilet seat debate. If you live with a member of the opposite sex and share a single bathroom, a derivation is given to determine who should put the toilet seat up/down and when. It concludes by suggesting:
"In the morning John leaves the seat up after performing #1. In the evening he puts it down.This, of course, assumes that middle of the night surprise consists of "her falling in". While this is an obvious concern, the middle of the night mistake is not to be ignored, wherein he forgets that the toilet seat is down and attempts to perform #1. I caution anyone who attempts to apply this model to their home restroom use that us men are notorious for our poor aim, and it is highly advisable to give us a larger target at which to shoot.
"This rule may not be precise but it is simple and approximately equitable; moreover the use of a definite rule sets expectations. The seat is put down in the evening to avoid the notorious 'middle of the night surprise'."