This is an expected result of a storage system that has finite capacity being tasked with storing a lifetime of useful information.<p>Research on this topic points to the notion that the brain is pretty actively trying to ignore things and toss out information that is no longer useful. It seems that the heuristic the brain uses to determine what should be kept and what should be discarded is related to how well some new information fits with information already in memory and how often an area of memory is revisited.<p>If you were tasked with fitting a lifetime of useful information on a 100 petabyte hard drive, how would you go about it? When you inevitably run out of free space, how would you continue to store new information?<p><a href="http:&#x2F;&#x2F;brainworldmagazine.com&#x2F;learning-memory-how-do-we-remember-and-why-do-we-often-forget&#x2F;" rel="nofollow">http:&#x2F;&#x2F;brainworldmagazine.com&#x2F;learning-memory-how-do-we-reme...</a>
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