Mailing List Archive

Mailing List: techdiver

Message Display

>Posted on 1 Jul 1996 at 06:19:35 by Richard Pyle

>> On 29 Jun 1996, Michael Menduno wrote:
>>
>> >  My understanding from talking to deco-guys like Hamilton, Vann, & others i
>> > that we really don't know the physiology. We are relying on RWH-maxim, what
>> > works, works. M2
>
>about the opinions of the guys who know.  It's enlightening that, as with
>many aspects of science, the more a researcher actually knows about
>what's going on, the more he or she tends to say, "We don't really know
>what's going on."


And I'm prepared to argue that's how it must be because
if we knew everything and so could predict all future events
with 100% certainty life itself would be pointless.

(So maybe Nature is perfect after all ?).


>I'm always interested to read more studies, but the more I read, the
>clearer it becomes that chaotic processes are involved, which means that
>the more extreme the exposure, the less predictable the probability of
>DCI; both within and between individuals.

Why do you use the word "chaotic" rather than "statistical" ?
Statistical mechanics would tell you right away that the
more N2 you dissolve into your tissue, the larger the number
of possible semistable solutions (N2 in gas phase)
you would see when you decompress.

It's a thermal process and can only be avoided if you
freeze yourself down to 0'K.

I have yet to see the nitty gritty of the current day
bubble models so I don't know how to cast this in the
language of these models.  I imagine trouble can occur
if bubbles of no great significance in themselves
were to say combine or you have no upper bound on the
largest bubble that can exist at any one given time
in your body during the decompression part of the dive.


In summary,  I don't think any model, ever, can bring you closer to
a risk free dive than telling you something about the *probability*
of a hit for a given profile.

John
cc015012@br*.br*.ed*

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]