kkleiner writes: "What did you do on this day ten years ago? What day of the week was it? What was the weather like? I can’t remember either. But for a very few, very special people, they can answer these questions for that day and for any other day of their lives beyond a certain young age. This new type of superior memory – termed hyperthymesia – has only recently been discovered and not much is known about it at all. But since the first case was documented in 2006 others with this ‘condition’ have come forward for researchers to study."