His arguments are shaky
IIRC MacAskill doesn't have a solution to fanaticism in his book on Moral Uncertainty. He notes that fanaticism is an unresolved problem for all decision theories too and basically leaves it at that.
IIRC MacAskill doesn't have a solution to fanaticism in his book on Moral Uncertainty. He notes that fanaticism is an unresolved problem for all decision theories too and basically leaves it at that.