> beings that have the same perception of time as us, or the ability to communicate in a "language", is just a human-centric idea Well, we do see this behaviou

> beings that have the same perception of time as us, or the ability to communicate in a "language", is just a human-centric idea Well, we do see this behaviour in other animals, and not just humans, or mammals even. I realise that's not broadening the net much - we share a common ancestor with everything that could be considered "living" on this planet, so ultimately it's all "human-centric" to an extent. But if there are forms of life that are wildly different, to the point we can't communicate with them or even understand that they're "alive" in any meaningful sense, then that's kinda out of scope ;) The definition of "alien intelligence" only includes things that we would be able to recognise as an alien intelligence. Otherwise we're just talking to the trees, and they're dull conversationalists.