Good video. Funnily enough, I related it to Mazlow's hierarchy of competence a minute before you mentioned it. (Mr. Hoorn here, btw.) Another connection I made was to van Merriënboer et al. their "Ten Steps to Complex Learning" or "4 Component Instructional Design". Particularly with regards to doing a skill decomposition (by analyzing experts, the theory, etc.) in order to build a map for how best to learn a complex skill, reducing complexity as much as possible while still remaining true to the authentic learning task; i.e., don't learn certain skills in isolation (drill) unless the easiest version of a task still causes cognitive overload. Because if you learn in isolation too much, your brain misses on the nuances of application in harmony (element interactivity). Related to the concept of "the whole is greater than the sum of its parts". You can master each skill composite individually but still fail epically at combining them into one activity, which is often required.

The study of cognitive development suffers from a deep theoretical tension – one with ancient philosophical roots.

Cognitive Development

Section 1.3 Theories of Education and the Online Environment

The prevailing approaches to reading instruction in American schools are inconsistent with basic things scientists have discovered about how children learn to read. Many educators don't know the science, and in some cases actively resist it. The resistance is the result of beliefs about reading that have been deeply held in the educational establishment for decades, even though those beliefs have been proven wrong by scientists over and over again.