We could talk to them. We could listen to them. Chances are at least one side would have something useful to learn from the other. (Think about how much we know

We could talk to them. We could listen to them. Chances are at least one side would have something useful to learn from the other. (Think about how much we know that we didn't 100 years ago. Unless this hypothetical other intelligent civilization, having developed independently of ours, happens to be within 100 years of progress of us in every respect, someone's going to learn something.)