Cheating and lying does not always devalue other people's happiness though. Cheating on the GRE doesn't obviously hurt other people. Lying (or misdirection) sometimes spares someone a painful truth or leaves them none the wiser. Like when a kid lies to his dad about where he was earlier this afternoon. These pretty simple counter-examples don't refute your point fully. I propose them because I think there is something lacking to say the only reason we can't cheat and lie our way to the good life is because it hurts other people's happiness. Sometimes it doesn't.
But cheating in Axis & Allies always separates the agent from the opportunity to gain the happiness that comes from being an excellent Axis & Allies player. I think this type of happiness must be part of your moral reasoning too.
Cheating on the GRE doesn't obviously hurt other people.
Except for the people whose actual ability is higher than yours, whose slot you took, or the people who get someone of lower ability that the scores suggest, and that's just the first order effects. The second order effects of having a society with less efficient information transfer are also pretty miserable.
Link to Blog Post: "Extremism in Thought Experiments is No Vice"
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This is a LW discussion post for Yvain's blog posts at Slate Star Codex, as per tog's suggestion:
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