/sci/ - Science & Math

>>5568722
I don't think the aliens must be humanoid to be able to develop a civilization.
There are some parameters they must meet to do so, though; for instance they have to be able to operate tools (which doesn't mean they must have a set pair of arms with hands).
Also they must obviously be capable of communicate between them and form groups (and of course this doesn't mean they must communicate sounds).
So far it sounds pretty obvious, but as you can see so far none of this sound that must be necessarily "human".
But here is a very interesting consideration I read some time ago:
No underwater life could evolve to develop a civilization simply because they won't be able to use fire.

So yeah, no Hanar.
Also, no omnisexual blue aliens which suspiciously and improbably look like the females of our species.

In fact, you know what? No aliens tits at all (which makes space exploration so much less exciting, I know)