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> As pointed out, the isolation valve is NOT "more", it is just "there" a
> necessary piece of safety equipment.

Once again, I am not disputing that the manifold is necessary.  The only
part I am disputing is if it is necessary _safety_ equipment.  And even at
that, I am not really disputing, but just unsure of. 

I said:
> >It is my understanding that in a hogarthian rig, less is better, 
> >and only bring along something if not having it signifigantly 
> >decreases you chances of survival.

To which Kevin responded:
> If the hogarthian system relied solely on the "less is better" tenant, it
> would consist of one large tank, one first stage, and one second stage,
> that is all.  This, I'm sure, we can agree is too "less".

To which I respond:
That is not what I said.  If it was solely "less is better" you could
leave behind the first and second stage and breath just off the tank.  Or
hell, leave the tank behind as well.  Reread what I said after that.
"...AND only bring along something if not having it signifigantly
decreases your chances of survival."

So, my question remains.  Does diving an isolation manifold over
independent doubles _actually_ increase my chances off survival?  If the
answer is yes, then the isolation manifold would be hogarthian.  If the
answer is no, then despite all its advantages, a manifold would not be
hogarthian.

NOTE: I am not disputing wether or not an isolation manifold should be
used.  The answer to that is clear.  My question/dispute is wether it is
hogarthian.

> You may conclude anything you want about the hogarthian system, but I would
> bet you either haven't tried it, you don't understand it properly, or more
> likely, both.

I fully admit that my understanding of a hogarthian system may be flawed.
But that is exactly the point of this discussion.  I am trying to
understand/learn what exactly constitutes "hogarthian".  I am not
disputing what gear configuration is better at all.  

Andrew
andrew@ce*.co*.jp*


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