For most, a dance floor is for movement to music (often but not necessarily with a partner) that is positively meaningful. I would evaluate instruction in that context, i.e., does it advance "movement to music that is positively meaningful."

Wasn't it Martha Graham who said:

Freedom to a dancer means discipline.
That is what technique is for—liberation.

This is an interesting discussion. Let me add something in a little different direction. Suppose you really wanted to add some technique on the wall. Lets take rise and fall for example, since that is the example which started this discussion. Let's assume you want to explain "commence to rise at the end of one". Remember the people reading this do not have your background. A beginner (or even the average social dancer) reading this will probably make some bad assumptions about what it means, or have no clue at all about what it means, so just writing "commence to rise at the end of one" will serve no purpose. Writing this is far more complex than you may think intil you sit down to do it. Here are some of the items that must be explained for this to have any meaning.

1. What dance(s) does this apply to?
2. How many different ways can this be applied in the same dance, for example in different directions. Are there exceptions?
3. How is it different in each dance, for example waltz and foxtrot. What about quickstep? Oh, and this will get even the advance dancers and many instructors, how is rise and fall done in bronze American foxtrot?
4. When is 1? When is the end of one? Is it a point in time or a period of time? Is this a step number or a unit of music? Are they the same? Are they sometimes different?
5. What is the definition of rise.
6. How do you do rise? Is footwork part of rise? Are there exceptions? What is footwork?
7. What is commence? How much is commence?

How big is that wall?

I saw this attempted once. After most the above questions were either answered or assumed, the article attempted to explain just the lowering action for a foot closure in waltz. It took 4 type written pages to describe, and still it was somewhat unclear. I'm sure someone may be able to do better, but it isn't easy. Even if you are able to write something that covers only a few of these items, the only person that will ever read it will probably be Anymouse.

It is said a picture is worth a thousand words. A video much more. I don't think anyone has ever estimated how many words a teacher is worth.

I just wonder how many of the respondees are teachers ? .

Pragmatism sometimes has to supplant the "will " of the teacher.

Of course I would LIKE all my classes to be of the highest technical instruction-- reality and multi yrs of experience, has taught me my wishes are not always the best remedy for sustaining a class-- it is-- after all is said and done -- a business .