Before I ask the question, I realize there is no answer because zombies do not exist... But this has always bothered me about zombies in movies, books, and video games etc. I just watched 28 Weeks Later, and it made my bother about zombies resurface. Here are my issues with zombies: Do they eat people? or turn them into zombies? They seem to be dumber than their past human selves, so why dont they eat eachother, how can they tell human from zombie? WTF its so annoying zombies make no sense.