Quote Originally Posted by Rater202 View Post
The comparison that I saw everywhere, for years, was zombies. Not alive, but they look like it from a difference and only able to make more of themselves by victimizing other things.
The main reason zombies aren't considered alive is because their bodies used to belong to a life form that has now ceased to live.

I'm of the opinion that any coherent definition of life will include most undeads.