http://www.msnbc.msn.com/id/44010877/ns/health-mental_health/#.TtxpPmMr2nB
Most people think that your memory works like a video camera. But in fact doesn't do that at all. It remembers the events and information as a sort of data. Also your memories can change over time as well. Which can eventually lead people the recall events that never happened. Also that hypnosis can be helpful when jogging ones memory, but is no more accurate than their initial memory.
So your mind can play tricks on you, which can be hard to tell whats real from wrong. It's scary to think how some people can remember something completely wrong from what happened. I hope that people can be more attentive then most people are.