After the Fact

 Actual Study, can be the research done after the fact. When I was a fledgling student, my initial goal was to perform the motion/technique as it had been shown to me. There was no concern (at any conscious level) on my part, for any of the intricate details of the performed techniques execution. It was all physics at  those beginning stages.    
  To be honest, I don't expect my own kyu rank students to fathom the intricacy's of a techniques finer points (the majority of student's could probably care less anyhow, LOL). 
 The average student is only seeking to be able to perform the instructed motions effectively (enough) in a defensive situation (to work). Whether they (actually) understand, or are able to cohesively explain what should be occurring (during that a techniques execution) is often irrelevant to their ability to learn to do so.
 As an instructor, we would like all of our students to understand each technique to the same level that we (supposedly) do. The fact is, that it will only rarely occur. 
 It's only those very few students that will actually begin teaching their own students. They will quickly learn, that it is then that they need to be aware of those intricate details (of a technique's performance).
 Until that time occurs, those are just irrelevant "facts" (for somebody else to concern themselves with). Being able to explain how/why a technique does, or doesn't work, is only important to an instructor (which the majority of students will never be).
 I have had well over 800 students in my experience of "teaching" a martial art. Of all of those students, only 10 have continued to the level of Yudansha (one of which I still teach classes with today). It begs the question, is it necessary to stress the details of a techniques execution?
  For many (if not most), it isn't "necessary". But that doesn't stop us from doing so, LOL. 
 It is only necessary for those few students who will choose to become instructor's themselves, that any of that information becomes relevant (enough) for them to be able to quote it as being required (to answer a student's question, or to be able to correct a student's ability to perform a particular motion). 
 All of those intricate details only become relevant after the fact. They don't necessarily need to be understood, only be able to perform the instructed motions (while they are student's). It's only after they have achieved their Yudansha grading that they will have the time to be concerned with those details (and many never will). 
 A performer only needs to be able to perform an action, an instructor needs to understand how the performed action can occur (as well as being able to explain that to other people, of different learning ability's).
 Talented performers come and go, skilled instructor's are far more difficult to find.