Has it ever occurred to you how strange it is that most people are honest?
The fact that most people are honest most of the time would seem to disprove evolution (in fact some creationists make this argument).
Surely the honesty of the majority only makes the dishonest minority more powerful?
Surely the honesty gene would have died out by now?
I turn this argument on its head and say that this proves that honesty does pay in the longer term. It is true that dishonest does work as a quick fix- but sooner or later word gets around and the dishonest person becomes a pariah.
The fact that the honesty gene (or meme) is so common proves that it 'works' in evolutionary terms. This indicates that we should consider adopting it.