Organizational, like human, memory requires a great deal of effort to build. The process of "teaching" an organization the explicit knowledge it needs to remember can be costly, especially since we cannot foretell what knowledge will prove to be the most useful. Much recorded information will become obsolete before it is ever needed again. Other knowledge we would prefer not to remember. If organizations, like people, remember what they did wrong, they are less likely to repeat their errors. But if they remember too many of their worst experiences, they are less likely to take necessary risks