Some minds are more likely to exist and/or have easier-to-satisfy goals than others. The AI would choose to benefit its own values and those of the more useful acausal trading partners at the expense of the values of the less useful acausal trading partners.
Also the idea of a positive expected value is meaningless; only differences between utilities count. Adding 100 to the internal representation of every utility would result in the same decisions.
Some minds are more likely to exist and/or have easier-to-satisfy goals than others. The AI would choose to benefit its own values and those of the more useful acausal trading partners at the expense of the values of the less useful acausal trading partners.
Also the idea of a positive expected value is meaningless; only differences between utilities count. Adding 100 to the internal representation of every utility would result in the same decisions.