Not sure I follow that line of reasoning entirely. The brain dictates a series of solutions based on a set of parameters, both metabolic and capacitive (primary), and situational (reactive). Situational parameters (previous workout sessions for instance) create a “chicken and egg” scenario.
Sadly, we are all familiar with brain variability. The processing part of the brain is ingenious but the conscious choice portion of the brains of many individual athletes can be very stupid indeed!