Questioning ideas means asking,
"Why do we do it this way? What are the alternatives?"
"How does this make the student safer?"
"How can I make this more efficient?"
"How can we improve the delivery so that they remember what we showed them?"
"How can we motivate them to find what works for them and invest in their education and potential?"
It means exploring and researching and training in things you don't believe are as good as your current training and investigating opposing ideas because of the 1 or 2 take-aways that will improve your overall knowledge and depth as a professional. It means de-briefing and tearing apart what you just did rather than patting yourself on the back to find out what can be improved.
The field of personal defense will always have fundamentals that will be important priorities: mindset, cultivating awareness, and the mechanics and dynamics of defending and attacking, but the presentation itself should always be exploring improvement and never be static or complacent. "Good enough" is not in my vocabulary.
NOVA Self Defense