Or maybe accepting messages from home (in rocket form or not) of “whoops, we were wrong about X, here’s the convincing moral argument” and acting accordingly. Then the only thing to be worried about would be irreversible acts done in the process of colonizing a galaxy, instead of having a bad “living off resources” endstate.
Or maybe accepting messages from home (in rocket form or not) of “whoops, we were wrong about X, here’s the convincing moral argument” and acting accordingly. Then the only thing to be worried about would be irreversible acts done in the process of colonizing a galaxy, instead of having a bad “living off resources” endstate.