Could this be why vasodilators like vimpocetine improve mental performance? Maybe it's half about getting more nutrients to the brain and half improving the garbage collector?
Nootropics. Great word to google. Given the importance of the brain in human endeavors, it's astounding that we're still flailing around trying to figure out how it works.
If we attacked issues with the brain like we attacked problems of getting to Mars, we could be much better prepared as a society to reach further heights.