Easy to rationalize after the event. Perforce because of our partial knowledge, we use prejudice (and faulty logic in the heat of the moment) everyday. It's als

Easy to rationalize after the event. Perforce because of our partial knowledge, we use prejudice (and faulty logic in the heat of the moment) everyday. It's also known as pre-judgement and it often gets things wrong. I don't know anybody these days who doesn't look round at his or her fellow-passengers on a flight, and wonder.