Dear Emeraldvideo:
Readers will note that I do not make comments on specific pieces of equipment, but rather tend to general comments. I can thus at least appear to be objective. [Were some manufacturer to offer me an obscenely large sum of money to "adjust" my persuasion, this stance might be modified.]
Algorithms Modification
There are ways to modify algorithms, diving or otherwise. One method is to take an old one and add on some modifications in an ad hoc fashion. Another is to design it from the ground up, a so-called ab initio approach.
Ascent Rates
An example might be found in ascent rates. A complete model will allow for the expansion of microbubbles with ascent (= reduction in pressure) in accordance with Boyle's Law. This increase in radius will result in a decrease in Laplace pressure (the internal pressure from surface tension effects) and essentially a trapping of gaseous nitrogen. A complete model will account for this (sometimes referred to as a "full up" model) and halt the ascent. A modified algorithm would simple insert stops for a couple of minutes every ten or twenty feet. The effect is the same with respect to prevention of DCS, although the latter procedure is not as "elegant" in mathematical terms.
Deep Dives and Multiday Dives
I am a believer in micronuclei generation by musculoskeletal activity as contrasted with regeneration of nuclei by time-dependent inanimate forces. This regeneration is one of the hallmarks of the RGBM; may studies at NASA do not accord with this in all aspects. How much of a difference this divergence in theory makes for diving, I do not know. It certainly results in a safe table, although it is possibly overly conservative in some dive situations.
While never having tested either algorithm, I can not give any personal evaluation. In many regards, it appears to come down to price and features of the meter that best suit the diver.
Dr Deco :doctor:
