[mathgradthrow]

Religion is whatever its adherents tend to believe.

Without a consistent formal system of inference, every moral proposition and its negation are consequences of the religion, so it is now capable of providing moral justification of any behavior. There is a powerful evolutionary incentive for religions to provide simple "justifications" for behaving selfishly, while disguising the inconsistency of the systems they put forth.

Effective altruism is particularly guilty, i think.