Convincing others... of anything... is a losing script.

Via the Dilbert Blog:

As a practical matter, it’s almost impossible to prove or disprove anything to another person’s satisfaction. Sure, there are special cases where, for example, a mathematician or a scientist can prove something to another mathematician or scientist. But you and I generally can’t prove anything to anyone. If you want to know whether neutrinos are real, don’t ask me. I’ve never seen one. I can’t even prove who ate the last cookie.