&gt; There was a (possible hoax) story a while back about a guy who could only remember the previous 15 or so hours of his life. He kept journals and had to jog his memory daily.<p>This is probably not the same condition, but those with anterograde amnesia cannot form new memories and will forget things within minutes. The movie Memento was about this, and Oliver Sacks wrote about a man with it in &quot;The Lost Mariner.&quot; I could definitely believe that story... Strange and awful things can happen to the brain :-&#x2F;<p><a href="https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Anterograde_amnesia" rel="nofollow">https:&#x2F;&#x2F;en.m.wikipedia.org&#x2F;wiki&#x2F;Anterograde_amnesia</a>