The dilemma of any Combat or Game System:
1) THEORY is a very small part of Combat Systems. Practice and Experience is the most crucial part of any Combat System. That's the first thing that should be explained - because if Combat or Any Adverse Work Condition doesn't need Experience as a theory then MASTERS of theory would be dominant.
The reason it is always "IT DEPENDS" is because Theory can only help in defining and communicating the experience - but the experience is the most crucial part - it's the FIRST INPUT that triggers the causality that results in mastery.
2) PRACTICE and Experience. If there was a way to do something good and be great without practice - wouldn't that dominate behavior and decision making? Being good at anything in a way that MATTERS to people is all about practice and experience.
Clausewitz, Sun Tzu, and Maurice got their asses kicked, they were not the best - the way the BEST in any field don't necessarily come out with books or CAN write books. The brilliance of Theory is in being able to have a framework to Qualify discussion about the field. Being able to communicate all the knowledge they have and thus replicate and BUILD over their knowledge.
the best do, the not-so-best teach.