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At 10:21 AM 12/25/69, Richard Pyle wrote: >As time goes on, the rationale for deep-air experience *per se* as a >prerequisit for trimix seems to diminish. I still do not have a clear idea >of whether I think new divers should first become experienced deep air >divers before progressing to trimix, or if they should go straight from OW >to shallow nitrox to trimix. Because I am not in the instructional >business, I doubt I'll ever be qualified to really have a valid opinion >anyway. I raised this issue with my instructor (IANTD) a couple of weeks ago. I'd asked why I needed to do deep air instead of tech. nitrox before trimix. My feeling is that there's no good reason for me to risk disabling narcosis on air at 160' when I could dive EAN 27. His response was that that was fine if I was always diving in the US near a gas station, but what did I plan to do when I wanted to do a 160' wreck dive in the bahamas and didn't have a corner store pumping nitrox? He argued that I needed deep air experience because I was likely to find myself using it some time in the future. I could have countered that I just wouldn't do the dive under those circumstances, but he has more training and experience than I so I chose not to. This was his argument, not mine, and I'm not yet sure that I buy it. Scott.
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