I am ambivalent on this subject. My own NAUI/YMCA Basic Scuba course (1962) took 6 weeks and was taught from the US Navy dive manual. One side of me thinks classes should be longer, rigorous and more comprehensive. Through the intervening years I have through my enthusiasm for the sport, introduced many friends to SUCBA. I have often retaken (or refreshed) in basic classes with student/friends to see what they were learning (or missing). A lot is missing. On the other hand, many of these new students/friends probably wouldn't have opted for a six week course. I tell them they are just woefully scratching the surface, be careful, learn more. All of them are still diving, incident free and continuing their education. Yes it is incredibly irritating watching floundering novices. But from my read of Incidents & Accidents, the old and bold seem to suffer more than novices. Then there is the whole fitness to dive issue, another time, another post.