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	Whoooaaa! Major brain bend - wrt ambient pressure exceeding
interstage pressure (c/o Rich P);

	Since the first stage is 'balanced' to ambient pressure by its
diaphragm or piston, why, isn't the interstage pressure 8-12 bar *above
ambient*?

	If not, then my understanding of kit function is flawed.

	On the subject of pony gauges; I'd carry one and secrete it away
behind a rubber band on the tank as some people do with their
regulators. Doesn't get in the way of the other gauges, but when you need
it, you reach for it and get it. 

	On the subject of 50/50 bailout and the teaching bitch; isn't
the selection of bailouts and bottom mixes a question of common sense?
Doesn't any right thinking person look at his bailout options,
understand his resources and potential problems and then select his
level of safety (organised situations such as WKPP with operational
standards aside)?

	If a diver, regardless of his training, uses a bailout too deep
its *his* problem. True, the agency should not say, use your O2 bottle
as a potential deep water bailout, it'll be alright; but I'm for saying
that it's the diver's decision what he does with what, when and where.

	You know, the free right of any god fearing American to make an
utter prat of himself?

	This looks like an issue of common sense (which as we all know,
is neither). And anyone who walks into a diving class and takes the
information on board without critical thought has already flunked the
common sense test. Maybe I'm just suffering from culture shock :-)

	Jason

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