All of us lose things. Sometimes we don't even realize they're lost. Remember the feeling of desperation as you checked your pockets for the fifth time just to make sure you didn't miss it? Lost objects have a way of staying lost, only to turn up months after you've given up looking and forgotten all about them. Finding things lost by other people works the same way. You don't usually look for lost purses or wallets on purpose. It happens usually doing something else.