Looks like this isn’t really a new decision theory problem at all.
Sort of. The shape is old, the payoffs are new. If Parfit’s Hitchhiker, you pay for not being counterfactually cast into the left branch. In Extremely Counterfactual Mugging, you pay for counterfactually gaining access to the left branch.
Sort of. The shape is old, the payoffs are new. If Parfit’s Hitchhiker, you pay for not being counterfactually cast into the left branch. In Extremely Counterfactual Mugging, you pay for counterfactually gaining access to the left branch.