Fragments, Benjamin Wilkomirski’s Holocaust memoir about his life as a child in a concentration camp, won acclamation when it was published. Unfortunately, it turned out that Wilkomirski had spent his childhood with foster parents in Switzerland. When confronted with the documented facts, he still insisted his recollections were real. "Is Wilkomirski simply a liar?" asks Daniel Schacter, who describes the incident in his new book on memory. Schacter’s answer is, Probably not; he is forgiving because he finds there is compelling evidence that we are all prone to some level of such distortion. Schacter is Chairman of the Harvard Department of Psychology and one of the leading authorities on memory. Memory’s imperfection is the subject of this his second book distilling memory research for the general reader. His inspiration was the idea that the imperfections of memory could be described as the seven "deadly" sins: transience, absent-mindedness, blocking, misattribution, suggestibility, bias, and persistence.