If sharing or trading of information emerges as the main driver of cosmic cooperation, then what sorts of information might be involved? Any desirable information will be valuable if generating it requires a massive and time-consuming computational effort. For example, a superintelligence may want answers to hard scientific questions about the nature of physical reality, hard mathematical questions about theorems and optimal algorithms and hard engineering questions about how to best build spectacular technology. Hedonistic life forms may want awesome digital entertainment and simulated
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