Essentialist misconceptions are shortcuts to avoid the harder work of 1) having clear goals 2) understanding what activities further those goals 3) evaluating efficacy of those activities and most important 4) tolerating the inherent uncertainty of our world
One of the most pernicious misconceptions that the tech industry has about human psychology is a strong belief in essentialist, deterministic, "born with it" personality traits that map cleanly onto homogenous, quantity-stable productivity outputs.