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I have been asked by Deeptek mag to write a comparison
of software with the help of Dr. Hamilton. I will do the
practical part, Hamilton will do his part. Hamilton and I
have worked together on deco for the last several years and just
recently made a presentation to the UHMS on this and other
subjects relating to deco and technical diving. I have most
of the programs already, and I now have Jarrod Jablonski playing
with the Abyss just so that I don't "inadvertently" miss something
there. I will then double check my results with Jarrod's.
Keep in mind, I could probably make any of these programs
do what I want them to do, since I already know what the deco
should look like before I run the program, so I will have to
talk about preknowledge as well as turnkey results. I will make
my recommendations for using all of them properly, as well as
why each is easy or hard.
As my dive partners will tell you, I don't even carry tables
when I dive , any more than I would need to carry the operators
manual for my automobile every time I drive. Since the Buelman
algortithm is essentially a solution to a system of linear first
order differential equations (non-linear perturbations considered,
no tecno weenies , please) , i.e. a summation of exponential terms
with their respective cooefficients (haven't you noticed that all
decompression schedules look like the time-varying voltage across
a charging capacitor?), and since most diffusion phenomena in
nature obey this behavior, why not go to the source and just
reverse a Fibonnacci sequence? Any type of piece-wise linear
approximation to an ideal exponential profile is very easy and
very reasonable to interpolate at will, after all it is just a
model. In fact is is much easier than the math I do all day ,
every day of my life trading Government bonds, which is what I
do for a living. And since I would rather get bent than lose
money, I trust my math. - George
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