If one man and one woman are living together, and the goal is minimizing the total number of times that the toilet seat has to be moved, the best strategy is pretty straightforward. As Michigan State economist Jay Pil Choi has found, everyone should just leave the toilet seat at whatever position it’s in when they’re finished.
I solved this problem the same way years ago, and determined th same thing: to minimize touches, everyone should leave the toilet seat where it is when they are done.
Well. That solves that.