Anybody care to provide a TL;DR in regular English?
As I understand it: Once you’ve been doing a thing long enough that you are doing it well consistently, as you continue to gain even more experience, a different set of neurotransmitters kick in and make sure the knowledge stabilizes. The point of stabilizing it is so that you don’t confuse yourself later by doing similar-but-different tasks. The mechanism of stabilizing it is that, now that you’ve learned the things to do, you start learning the things not to do.
That’s only from the abstract, so it may be wrong. If I’ve misunderstood it, the most likely way is that I stated that conclusion too strongly and this merely shows some piece of that, not the whole picture.