
Originally Posted by
Roobster
With billions of years of evolution and civilization only appearing relatively recently it must be assumed that civilized life appearing is very close to impossible. If it is almost impossible that humanoid civilized life appears, it wouldn't be much more likely than that civilized life with other body shapes appears.
Still, since the only known form of beings with civilization that exists have our body shape it can be argued that it is a requirement for civilization, along with every other common characteristic that humans have. I'm not saying that's opinion though.