As much as I love my wife, I really hate it when she writes what I am purported to think and/or believe.
Just for the record:
1. What she was shown, what she was taught, what she has learned as a result of taking DIR-F will make her a better diver. Her biggest problem as a diver/dive buddy is her focus -- too much -- which means I, as her buddy, have too often been a solo diver for all intents and purposes. Her instructor strongly emphasized situational awareness -- and if she really gets that, she will have become a much better diver/buddy.
2. I am NOT a cave person! I find the geology interesting, but I also find them sterile and generally monochromatic. So, if she does go into Cave Diving she'll probably do it with someone else. (Although I wouldn't mind doing a cave tour in Mexico sometime -- who knows, maybe I'll be transformed.)
What Lynne has interpreted as my opposition to DIR-F (and DIR in general) is my disagreement with the dogma -- especially relating to equipment. Without any desire to get into a discussion about the equipment (and yes, I absolutely understand the why and it is appropriate -- don't get me wrong), I fail to understand the rationale for the dogmatic requirement for all the gear at the "Fundamentals" level.
If, as it appeared, the most important "skills" taught/learned at her DIR-F were equipment agnostic, then why make the task more difficult by adding unnecessary equipment changes? And, in listening to her, it is apparent to me the most important "skills" were bouyancy control and situational (buddy) awareness. The use of the "special" DIR equipment appeared to be pretty incidental to the really important stuff -- AT THIS ENTRY LEVEL OF TRAINING.
In my discussions with her, I've used the novice pilot analogy. IF someone wants to become a jet jockey, they don't start their training on a jet -- they start with the simplest plane to work on the skills appropriate at that level. As the important skills (flying straight and level, making turns without changing altitude, talking to ATC, taxiing and taking off, and of course, the one mandatory maneuver, landing) improve, you add more equipment complexity. Here, as a relatively novice diver, I saw Lynne's basic /important skills, get worse as she learned her new equipment. It just seems to me to have added an unnecessary level of complexity to a learning situation that is complex enough on its own.