If life can have many different bases, I wonder if we’ll even be able to identify extraterrestrial life when we do encounter it. I have a hunch that we will, s

If life can have many different bases, I wonder if we’ll even be able to identify extraterrestrial life when we do encounter it. I have a hunch that we will, soon enough, but it’ll be a much longer time before we encounter anybody near enough to us in size, shape, longevity, intelligence, chemistry, and temperament that we could really interact with them.