I can't remember where first I saw it. It must have been when I was a boy. A medicine cabinet with a mirrored door and behind the door a small slot an inch and a half or so wide. When I found out what it was for I was astonished, it left my mind unsettled. Of course the slot was the disposal chute for used razor blades, and I realized that it was probably the best way to get rid of them, but it bothered me. To think that in your home, while you slept, there lay behind the plaster, between the studs, a rusting pile of sharp danger.
We do good things as people and as societies. We plant flowers and grow food, we build schools and paint lovely pictures, but we also leave hazard in hidden places.