Scott, I agree with you - that air nonsense is one of the biggest problems
in diving. Certainly, it is a sham for anyone who pretends to be teaching
tech diving to say anything as stupid as that. In addition, this yap out of
instructors makes students think there is some value or toughness to diving
air, and that mentality kills. This is why I so bitterly hate idiots, and
love to smash them into the dirt at every opportunity. They kill other
people with stupidity.

High partial pressures of nitrogen cause the red cells to become rigid and
get hung up in capillaries or damage them. The response of the body to this
and the immune response tend to close off the area . Anyone ( but a dive
instructor) can see what that means for decompression.

In addition, it is so funny to me that these half wits think they are "ok"
on air since studies show impairment relative to the norm at even 40 feet on
air. The chess experiments are the funniest, where the guy outside the
chamber keeps beating the guy inside the chamber at 40 feet, no matter who
is in which position.

We found in the WKPP that mistakes were being made on nitrox and air at
relatively shallow depths, so we outlawed the use of nitrox as a diving gas
or air for any reason. We also found inadequate decompression results from
air and nitrox at deeper depths. There is no decompression that works with
air.  We use helium in most mixes. If you look at cave diving death
statistics among "trained"cave divers, you will see the preponderance of
100+ foot dives where nobody seems to know what went wrong.

We in the WKPP know what goes wrong, so we don't do it.


-----Original Message-----
From: ScottBonis@ao*.co* [mailto:ScottBonis@ao*.co*]
Sent: Thursday, February 07, 2002 4:03 PM
To: trey@ne*.co*; techdiver@aquanaut.com; cavers@ca*.co*
Subject: Re: Decompression DIR style


Hi Trey,

As per your request, my favorite stroke comment about mix is an instructor
saying "I dive to 165 ft. on air all the time and do just fine.  So if you
set the END of your bottom mix to 165 ft., you'll have no problems and you
end up saving the cost of the excess Helium needed for an unnecessary lower
END."

Take care and dive safe,        Scott

Some weeks it's just not worth the effort to gnaw through the restraints and
scramble up out of the pit.



In a message dated 2/6/02 8:20:34 PM, girvine@be*.ne* writes:
<< Most of you are familiar with the worst of them, which is "get off the

helium as fast as you can". If  dive instructor has told you that, you are

dealing with the worst kind of idiot. There are many more like this, but I

am having  tough time shifting gears to what is wrong from what is correct.

Maybe some of you could bring these things up , since you are exposed to

them all the time. I only hear dumb things on lists, obviously the people I

dive with are of a different level of understanding.



-----Original Message-----

From: Dan Gibson [mailto:dgibson@b-*.co*]

Sent: Wednesday, February 05, 3603 12:44 AM

Subject: Re: Decompression DIR style

To: techdiver@aquanaut.com


George mentioned something about helium and old wives tales.  Since I don't

know enough about this subject and probably have not heard all of them,

could they be listed like other things (Baker's Dozen and Why we don't do

bounce dives)?  I think it would be helpful to know when you come across bad

info.


Thanks,


Dan >>
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