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From: <gmirvine@sa*.ne*>
Date: Wed, 28 May 1997 14:21:36 -0400
To: TOM.MOUNT@wo*.at*.ne*
CC: cavers@ge*.co*, techdiver@aquanaut.com
Subject: Standards, Deep Air, Narcotic Mixes - Three Wedings and a few Funerals
> 
> ---Tom Mount <TOM.MOUNT@wo*.at*.ne*> wrote:
> >
>  
> This
> > has produced a great safety record. >
> > Shaun you should stay witin your limits and if they are less than
> those
> > we advocate for trimix then by all means do not attempt to become a
> mix
> > diver with IANTD
> > Tom
> >
-------

         Tom, I am incompetent on air at 160, so are you saying that I
could not get an IANTD "trimix" "certification"?  Also, why not just
recommend 160 aed instead of 130? Why do you recommend less aed in cave
than ocean if you do not feel there is impairment?

         If this is so safe, then why are a disproportionate number of
cave divng accidents amoung trained divers below 130 , and why are a
disproportionate number of ocean diving accidents below 130?  

         PADI long ago spotted the correllation without knowing why,
just like the Surgeon General spotted the link bewteen cirgaette smoking
and cancer, without knowing why. In 1997 the absolute reason was
established, and some day soon the absolute reason for narcosis will be
established. In the meantime, obvious is obvious, and the dichotomy in
your standards alone imply an awareness of this and a denial at the same
time.

         The concept that there is such a thing as "ability to handle
impairment" is fundamentallly flawed. Your "standards" need changing, in
my opinion. - G
--
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