[Crowbob]

The mechanism of memory is truly mysterious. I sustained a concussion in High School from which I experienced retrograde amnesia. The entire three days prior to the injury was and still is lost. No recollection whatsoever. Certain parts of the brain are responsible for very specific memories, such as names or faces. Our father could not recall our names occasionally but he demonstrated a truly remarkable ability to recall faces and put them in context. A very interesting read is a book of case studies on brain-injured people: "The Man Who Mistook His Wife for a Hat".