[dogscoff]

I don't really follow your example of alien dolphin-like animals, either. Of course scientists would study the heck out of any alien life form. Scientists study dolphins, too.

My point is that we assume dolphins aren't sentient because we have thousands of years of history defining them as 'dumb animals'. SUppose dolphins didn't exist on Earth, but on planet Blarg. Now suppose we sent a spaceship to Blarg and discovered the dolphins, frolicking and singing to each other. WOuold we say "they're just a bunch of clever but sub-sentient animls" or would we start with the assumption that they might be sentient and work our way up? And if we did the latter, what would we find?

I guess what I'm saying is, we take the various life forms we already have for granted. If we were to look at them with fresh eyes we might be surprised.

But I can't remember what this has to do with xenodiversity. someone remember to ask me when I sober up.