Parfit's Hitchhiker is not a "Newcomb-like problem"
Then you're defining it differently from the way I, and others, are.
My req's for a Newcomblike problem:
1) Individuals who make certain decisions seem to win at higher rates than individuals who do not.
2) As far as you know, the act of decision doesn't causally effect the likelihood of a win.
what where your reqs?
1) Individuals who make certain decisions seem to win at higher rates than individuals who do not. 2) As far as you know, the act of decision doesn't causally effect the likelihood of a win.
These two requirements seem inconsistent.
I'd define a decision problem to be Newcomb-like if the payoff and the agent mental state (preferences, beliefs, decision procedures) are not independend conditional on the agent's decision.
Some of the problem on the list you linked are Newcomb-like, other are committment problems, other aren't even decision problems.
Another month has passed and here is a new rationality quotes thread. The usual rules are: