(Human-like level of intelligence) aliens imply many things, like reduced intelligence explosion risk and presence of alien-related risk. You might want to shift donations or research focus accordingly.
(Getting outside the intent of your thought experiment, there is also the problem that just as a belief has implications, it has considerations that would sustain it, so an isolated incorrect belief won’t survive on its own, you need systematic change in a lot of related knowledge (perhaps including some anti-epistemology) for it to take. Even if two beliefs have identical implications, they may have different causes, which is sufficient to distinguish them.)
(Human-like level of intelligence) aliens imply many things, like reduced intelligence explosion risk and presence of alien-related risk. You might want to shift donations or research focus accordingly.
(Getting outside the intent of your thought experiment, there is also the problem that just as a belief has implications, it has considerations that would sustain it, so an isolated incorrect belief won’t survive on its own, you need systematic change in a lot of related knowledge (perhaps including some anti-epistemology) for it to take. Even if two beliefs have identical implications, they may have different causes, which is sufficient to distinguish them.)