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doctormike, no one even knows what happened(!)
Do you really think any criticism at this stage is useful?
I don't know this diver, and I'll believe it if his friends say that he was qualified and just ran up against the knife edge between possible and impossible. .
doctormike, I just think that if you want to criticise record attempts in general, it would be better to use a thread dedicated to this. The worst thing to do in accident analysis is always presuming anything.
There are lots of records that might well probe the boundary between the physiologically survivable and fatal, but we don't encourage them. How much gasoline can you drink? How many gunshot wounds can you survive? I think that these extreme depth bounce dives on scuba are close to that category at this point...
The only thing that we all know with 100% certainty is that he died in a depth record attempt. So why am I “presuming” anything?