Many years ago, just for fun, I ran an experiment on my own laundry to see what happened to lost socks. I used a permenant ink marker to assign a number & letter to each pair of socks (they were mostly white tube socks) to see how many I would loose over time. (Yes, I was board...)
The experiment ended a miserable failure after three years: I never lost a single sock.
What I want to know is where do those single shoes come from that you find along the highway?