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> Scuba has evolved to become quite easy to learn and practice. The dive
> equipment for scuba is extremely reliable, and durable.  Most of it works
> no matter how badly it is treated.  The same is not true for our
> rebreathers, as you know.

I think Mike's point was (correct me if I'm wrong, Mike) that if you give 
rebreathers another 50 years, like SCUBA has had to get to the level it 
is today, then it might follow the same popularity path.  On the other 
hand, you're point is a good one, that rebreathers will probably always 
require a higher level to conceptual understanding to operate.  But is 
that a bad thing?  The way I see it, today's average SCUBA diver is WAY 
underqualified to be a SCUBA diver.  I applauded IANTD's intorductory 
nitrox course (taking non-divers and training them straight through to 
nitrox) because it's a course that teaches divers the things that *ALL* 
divers should have been taught in the first place.

Aloha,
Rich

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