User blog comment:Mr.Robbo/Human Chauvinism 5/@comment-4364108-20140106235932

Uh, can you name a single environment where a carnivorus plant somehow have the evolutionary pressures to develop a nervous system that could evolve into a brain. You are probabbly thinking of Venus fly traps. There are NO nerves in a venus fly trap, it's an entirely chemical and mechanical process, and a good one at that, it doesn't need nerves to do that and it's better to use no nerves in that case. Im not saying this is entirely impossible; it would just be highly unlikely for a plant to evolve to gain a nervous system or rudimentary sapience without losing their plant-status. It would be downright impossible for them to becoem space travellers.

Aquatic environments just don't have the ability to allow spacefaring life to evolve, and it's very difficult to allow sapient life too. They need to be able to manipulate their environment, electricity would be nigh impossible for them to develop, much less anything beyond basic tools, aquatic environments will almost favor the more streamlined animals who can run from prey/catch it, so it woudl tkae a very very special environment to allow environment manipulating limbs to evolve. The only way I could see this work is if they were amphibous.