scubamikey:I'm not asking him to teach me DIR-F in the shop, but if we're talking about my safety underwater, I'd like the person to be familiar with different equipment and methods. For example, I switched veterinarians because my old vet (an old horse doctor from Cornell) would recommend a steriod shot for my cat's allergies, whereas my new vet (younger small animal specialist from Cornell) would use an inhaler so the steriods didn't get in the muscle tissue, and went directly into the lungs. New methods, new equipment, better and safer results. So some new technology can be a good thing. But yes, some is just marketing and selling gear.
Lets look at a more applicable example. I'll use myself. I was an instructor and a dive shop owner before I ever heard of DIR or knew there was such a thing as a bp/wing. I didn't get my first glimpse of that stuff until I was on my second technical instructor. Though I had dne my homework, taken all the tests and read everything on diving that I could find, I never came accross it. Of course we weren't on the net at the time either. I certainly hadn't intentionally remained ignorant and knowingly endanger the lives of my students or other customers.
Well, all those things interest me. I expect my DIVE INSTRUCTOR to have information about DIVING. Or tell me he doesn't know about that specialty but he'll find someone who can answer my questions. If he can't do that, he could be called an UNEDUCATED DIVE GEAR SALESMAN and wear an appropriate badge.
Your instructor does have information about diving but maybe not all information related to all diving. You can expect whatever you want but why should he research a field that he doesn't know exists or doesn't think is relevant to the field he's in. Were you willing to pay for that service?
Things might be changing some with agencies like PADI getting into technical training but traditionally technical diving, and even DIR haven't just been specialties within recreational diving. They've been a completely different world.I think your next post said what's really up, which has to do with selling gear and staying in business.
It certainly does work like that sometimes but hogarthian and DIR are small enough that a rec diver or even a rec diving pro can miss it completely.