To modify RobinZ's hypothesis:
Rather than focusing on any Bayesian evidence for cheating, let's think like evolution for a second: how do you want your organism to react when someone else's voluntary action changes who receives a prize? Do you want the organism to react, on a gut level, as if the action could have just as easily swung the balance in their favor as against them? Or do you want them to cry foul if they're in a social position to do so?
Your friends' response could come directly out of that adaptation, whatever rationalizations they make for it afterwards. I'd expect to see the same reaction in experiments with chimps.
How do you want your organism to react when someone else's voluntary action changes who receives a prize?
I want my organism to be able to tell the difference between a cheater and someone making irrelevant changes to a deck of cards. I assume this was a rhetorical question.
Evolution is great but I want more than that. I want to know why. I want to know why my friends feel that way but I didn't when the roles were reversed. The answer is not "because I knew more math." Have I just evolved differently?
I want to know what other areas are affected...
We've had these for a year, I'm sure we all know what to do by now.
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