“Who cares if humans go extinct?” Um, first of all, I do, but secondly, if you have two groups, and group A makes group B go extinct, that is fairly strong evidence that group A has bad ethics. If you have two groups and group A is much more powerful than group B, but group A figures out a way to coexist with group B, than that is evidence for good ethics existing in group A.
“Who cares if humans go extinct?” Um, first of all, I do, but secondly, if you have two groups, and group A makes group B go extinct, that is fairly strong evidence that group A has bad ethics. If you have two groups and group A is much more powerful than group B, but group A figures out a way to coexist with group B, than that is evidence for good ethics existing in group A.