[tasty_freeze]

Much of the information we collect has a half life, or situations change and that information, while still valid, is not applicable to the issues we are facing currently. The vast majority of things we learn end up getting discarded at some point.

Think of the most recent book you read. How many of the details actually stuck with you at the moment you closed it. Now think of a book you read 10 years ago. How much of that do you remember?

I took years of mathematics and was able to do well on tests, but 40 years later I only recall the "shape" of PDE solutions and couldn't actually solve anything anymore. Instead my brain is stuffed full of arcane knowledge I need to do my job, and if I don't use it within a year, I probably need to learn it all over again.