
Imagine a colleague of yours, Mary, comes to the office one day and starts talking about this guy John whom she met in a bar. Supposedly, this guy is not only handsome, but also super smart, extremely witty, and God knows what else. So, obviously, you cannot wait to see this stud. When you – finally - meet this Brad Pitt look-alike, Brad Pitt seems to have been turned into Danny DeVito: all you get to see is this balding dwarf! What makes matters worse; he is so boring that after 5 minutes of talking to him you have to seize any excuse you can to run away from him. So, the next time you meet Mary and ask about John, wondering perhaps whether she meant a different John, you still hear this same perfect description. If you ever were in a situation like that you know that it can be quite confusing, you might ask yourself: what on earth’s name is Mary (insert the name of your own friend here) thinking?! Can’t she see the blatant truth about this guy?
Positive Illusions: Brad Pitt or Danny DeVito? – In-Mind.org