Fascinating debate. My thanks to Thal and King for their elegant and civil way of expressing their ideas and, in the process of doing so, enlightening readers like me.
I sympathize with many of the tenets exposed by Thal. However, there is a basic economic reality inexorably tied to any for-profit business model: the goal of the firm is to maximize shareholder wealth. It doesn't matter if the firm has a mission statement saying something like, "Our Mission is to make the world a better place by... <fill in the blanks>." The goal will still remain as the maximization of shareholder wealth. Consequently, if a certain training agency is a for-profit organization it cannot be expected for them to place the best interests of their students above the profit maximizing goal. Ironically, even non-profit organizations are infected by this philosophy.
This sad reality is what has created the current state of "how the world learns to dive". Is it shortsighted? It probably is, but another financial axiom tells us that a dollar today is worth more than a dollar tomorrow. And in any case, from the point of view of the industry leaders, who cares if it is shortsighted -- life is short and by the time the industry declines they will have ridden the money train into a very comfortable retirement.
Though I wholeheartedly would prefer a business model like the one Thal advocates, I have serious doubts that the current reality will change much. It may decline and the industry as a whole may contract, but even so, I sadly don't see it going the way that you advocate, Thal.
I'm 33 years old. I've been diving since I was 14. I learned scuba from my father. He learned scuba along with his father back in 1964 when he was 14. After graduating from college I did very little diving. Until then all of my diving had been in warm waters. I recently moved to the Pacific Northwest and decided to retake diving again. Being aware that cold water diving is very different from the diving I had done, I decided that I should get some training. Besides, it wouldn't hurt to get a refresher after being out of the game for so long. I was OW certified in Jan 2008. Frankly, I was largely disenchanted with the course. It was way too watered down and missed what I considered crucially important basic training elements (e.g. panic management/avoidance, basic decompression tables, etc). Without much effort I got perfect scores in written tests and skills tests. I learned nothing new. Surely there must be something better, so I took AOW. Same story.
I then felt like this is a never ending spiral to sell more useless courses and get more bang from the buck. But I gave the basic nitrox a try because the training and the literature that I initially went through with my father didn't cover mixed gases. This, without a doubt, would now provide something new to learn. It did, but as I did more research on my own, I came to realize the enormity of what I did not learn regarding mixed gases. It feels that diving knowledge today is chopped into many ridiculously tiny pieces for the sake of commercializing more items and getting more money.
Back in the day, my father and I never went beyond the no-deco limits. Nowadays, I've encountered several situations were a deco dive would be desirable. Apparently, if I want to do deco diving, I have to become a "tech diver". So I enrolled in deco procedures and advanced nitrox. Will I be a "tech diver" after I get the card? Who cares! I don't. I just want to be able to explore good stuff that will require me to be down longer than no-deco limits allow. I must say, I thoroughly enjoyed the class. I learned a whole lot of new things. And to the credit of my instructor, he pointed me to materials and knowledge that went deeper than the bare requirements for the card. I could have aced the knowledge requirements of the course by going through the book by myself without the guidance of an instructor, but I would have missed the extra mile that he took in teaching us.
Unfortunately, tech diving instruction practices seem to also be plagued with the same mercantilistic vices seen in sports diving -- which do not necessarily work for the best interest of the student. But hey, it's not a perfect world. We have to make the best of it. BTW, Thal, do you know of anybody or of an organization that teaches scientific diving like you do near Vancouver, Canada?