Elf, Orc, Dwarf, Halfling, troll etc. might have really existed

An interesting theory indeed. To be honest, at first I was ready to write it off as a load of baloney. As I read on, however, I was a little intrigued. Whilst I wouldn't go as far as saying that "elves" or "giants" existed, I'm sure it's possible that beings which had a resemblance existed.