Seameadow
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And all I can do is sit here and wait for the epic battle between SM and RH to start,,,, again
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No, RH is banned, so you will not see his fervid and angry response in this thread. That's my job. He will be taking it out on me about my last post via email, probably by noon.And all I can do is sit here and wait for the epic battle between SM and RH to start,,,, again
No, RH is banned, so you will not see his fervid and angry response in this thread. That's my job. He will be taking it out on me about my last post via email, probably by noon.
SM = Simon Mitchell.Who are SM and RH?
A battle between a scholar and a software engineer is sad, as they should co-operate.SM = Simon Mitchell.
RH = Ross Hemingway
Simon Mitchell is one of the world's foremost authorities on decompression theory. He chaired the workshop on Deep Stops years ago. Ross Hemingway is the software engineer who created V-Planner and Multi-deco.
Years ago there were endless discussions about the deep stops controversy on several different diving social media platforms. I believe the first was on Rebreather World, but eventually it reached ScubaBoard, too. All the discussions starred Simon talking about the research studies that indicated that deeps stops were not the great idea everyone (including Simon) had once thought them to be. The opposing point of view was always pretty much Ross Hemingway arguing against that research. Ross seemed to have a particular affinity for VPM.
In I believe all the platforms that featured these debates, Ross was eventually banned. That includes ScubaBoard.
Deep stops vs. shallow stops. Too much theory, too little personal experience.
Sure, there's the bubble formation. Some people do prefer deeper stops to avoid that in the first place.
Some people allow some, and spend more time at shallow depths.
Depending on the dive profile, either one could be better.
Correct me if I am wrong.
The optimal solution might thus be to have moderate deep stops and to extend the shallow stops. This makes the dive longer, which is great!
It is an absolutely marvelous feature that lets you visualize the decompression stress for various dive profiles.The Subsurface dive log has a GREAT tissue loading heat map. You should study it.
In the end, deco stops are a trading resources (time and gas) for reduced DCS risk. For any given dive profile (within reason) you can trade more resources for less DCS risk. Each deco algorithm establishes a procedure for allocating the resources to reduce the risk. Each algorithm is based on theories about what causes DCS, and what increases/decreases DCS risk. VPM and other bubble models emphasize micro-bubbles as a risk driver (and tend to produce deeper first stops). Buhlmann and other Haldane models emphasize tissue dissolved gas tension as a risk driver.Many people wrongfully believe that it is great to get out of the water ASAP. This might be true for arctic waters or where wave action is significant, but probably nowhere else.
Now. I am NOT a decompression expert. So, if you follow my recommendations and die, then what can I say? You did not ask the doctor in the medical forum? You trusted me instead? Well, your choice.