Creating mismatches or errors in performance cues the nervous system to change by triggering the release of neurochemicals.

“the way to create plasticity is to send signals to the brain that something is wrong something is different and something isn't being Achi achieved errors and making errors out of sync with what we would like to do is how our nervous system is cued through very distinct biological mechanisms that something isn't going right and therefore certain neurochemicals are deployed that'll signal the neural circuits that they have to change”