To explain Jim's inaccurate vivid flashbulb memory of him remembering a day when his parents won the lottery and recalling all the events and things that went on in that day exactly as he believes they did. A simple and logical explanation that psychologists would come out with in answering this question would be that Jim has gathered all these false memories from events he has gone throughout his life. Perhaps just a month before he recalled his memory he had played the board games with his siblings and over the time of a month his mind assigned that experience with his memory of when his parents won the lottery. This assignment of the brain combining memories with others is because flashbulb memories change over time. Jim had an episode Source
