Although my 8-year-old son likes his teacher, he is frequently bored at school. He attends a high quality suburban public school in the United States. He has a lot of traits in common with LessWrong readers, and we would like advice for what he can do to counter his boredom. Many of you must have found grade school more or less tedious. What were your coping strategies?
One of the classic ways to demonstrate that a lot of knowledge can be retrieved is to retrieve from a person the number of steps in the stairway of the house in which he lived as a child.
I personally have IRC and ICQ and MSN messanger transcripts that go a long time back with contents that you could potentially retrieve.
The fact that you get in some savants total memory recall of some particular type after damaging their brain is also good evidence.
As far as physics is concered maybe a human being that's 1,000,000 years old runs into problems with storing his memories. That doesn't mean that an issue for human operating in todays world.
Because the main evolutionary reason that we store information in our brain isn't to recall memories. It's to pattern match what we experience into categories and make decisions based on those categories. For pattern matching it's useful to keep storing all information but unnecessary to retrieve individual instances of memories.