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On Wed, 13 Sep 1995, GEORGE M IRVINE III wrote: > The oil companies are the best testers of this. > I use the 130, maximum , meaning that I mix for > 130 considering the deepest known depth I > could possible hit, not my average, which is more > like 110. The reason , in my case, is that I want > enough of a balance between the nitrogen and > helium to get some benefit at deco. Otherwise , > I would use heliox. This stuff is well documented, > which is why the refusal of the agencies to abondon > the fantasy that there is such a thing as being good on > air is so indsidious. It has been my stance for a long time that there are two types of folks: Those who know when they are narced and those who don't. I think that George is making a lot of sense here, and that diving while impaired will kill sooner or later - if not you then someone who emulates you. I don't know why you are the only one who knows about the German studies. I'd be interested in where, depth/timewise they started noticing impairment. My personal belief is that there is some impairment at rather shallow depths. Of course, if you've performed a single task over and over again, you have a greater likelihood of doing it right while impaired - if you are driving drunk you are less likely to have an accident driving a familiar route. The point of all this is to limit task loading to something that can be dealt with given the impairment, and to limit the impairment level. George has pointed out other reasons for limiting the Nitrogen loading, as well, regardless of your ability/willingness to expose you and your buddies to your impairment.
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