The A-B game seems incoherent, in that I'm not actually making a decision. I would be glad to learn that I had "chosen" A, but as per the statement of the problem, if I'm doomed by the B gene to choose B, then I never had the option to choose A in the first place. I don't know how to do decision theory for an agent with a corrupted thinking process described in the Newcomb's Soda problem. For example, I could model it as "I have a 10 percent chance of having perfect free will, in which case I should take the vanilla ice cream, and in the other 90% of the time I'm magically compelled to obey the soda's influence so my reasoned answer won't actually matter" but that doesn't seem quite right...