That's a good point, I'd never really thought of that! Almost any life we could find in another system, we'd see before our first radio waves got to them. On t

That's a good point, I'd never really thought of that! Almost any life we could find in another system, we'd see before our first radio waves got to them. On the other hand, if I was some ancient super advanced civilization, I'd have probes all over the galaxy, and they'd report as soon as anything interesting happened with evolution on a planet. So they could know what life was like on Earth about 1500 years ago, and extrapolate from that. Not that I can guess what a super advanced civilization would think like :P