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It's Christmas time, and in uncharacteristic fashion, Dr. Black will say something good about the Doing It Rightists. They are right about preaching that diving deep on air is wrong. Inert gases act as anesthetics, and nobody is immune to this...no human body can be immune, it is not physiologically possible. Divers who claim to be "good on air" are good on BS. Regarding tolerance, although some subjective adaptation is possible, there is no objective adaptation; not anymore than one could adapt to the anesthetic gases an anesthesiologist would give you prior to surgery. Diving deeper than 130 feet on air is dangerous, and any agency that recommends this prior to obtaining a higher level of certification (i.e. trimix) is wrong. Merry Christmas to the Doing It Rightists and everybody else. Dr. Black, aka icediver __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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