There's also something that is often mistaken for enlightenment which is a kind of insanity. Often, people will have some kind of weird experience which is quite abnormal and think, "Oh my God, that's it, I understand everything" because they start seeing things in a very weird way and think that's how enlightened people see things as well.
A lot of seriously insane people have managed to acquire huge followings based on the idea that their insanity is a kind of enlightenment. An obvious example would be Charles Manson or Shoko Asahara who is the person responsible for the Sarin gas attack on the Tokyo subway.
