If you're in a store and you notice someone else knocking a small item onto the floor, and they don't stop to pick it up, do you pick it up?
Yes and yes. Last night at the store I was walking down an aisle behind a couple of guys. One of them was running his hand along the front of the items on a particular shelf, and something fell down. He didn't bother to pick it up, but when I got to it, I picked it up off the floor. He noticed me doing this and asked me why I would bother to pick up something that someone else had knocked over. I didn't really have a good explanation other than thinking there was no reason to leave it on the floor. Am I the only one who does this?