Maladaptive Software

From the summary of a review for "The Seven Sins of Memory: How the Mind Forgets and Remembers" by Daniel L. Schacter:

You've put your glasses down somewhere, and now you can't find them. That is the memory's sin of absent-mindedness. Schacter, chairman of the psychology department at Harvard University, cites that and six other sins of memory: transience, the weakening of memory over time; blocking, the inability to recall a familiar name or fact; misattribution, in which one assigns an item of memory to the wrong source; suggestibility, the implanting of memories through leading questions; bias, the unconscious reshaping of a memory under the influence of later events or opinions; and persistence, the repeated recall of disturbing information or events that one would prefer to forget. Do these aberrations serve a useful function? Yes, Schacter says, they protect against overload, helping the memory "to retain information that is most likely to be needed in the environment in which it operates."