ummm this is probably the most unrealistic thing in Dota yet no one has mentioned it... the fountain has a conscience and shoots a freaking flamethrower at enemies instead of highly compressed water or magic beams or whatever else it could be
EDIT: ok sorry it has been mentioned

plus one more unrealistic thing about the fountain (which is beautifully fixed in HoN):
how the hell does the fountain heal you just by existing next to it?
