That did occur to me, but I realized I have no idea when our mailman actually shows up at our building, since our schedules have never crossed. I decided I woul

That did occur to me, but I realized I have no idea when our mailman actually shows up at our building, since our schedules have never crossed. I decided I would feel too silly staking out our building all day :P Although now I realize that I could have done a binary search over the course of the week by checking if mail was there or not...