| Imported post I can't say I know for sure , but with DCI being prone to so many different factors and variance between individuals, I suspect that in the early days of diving they simply collated all the factors about the dives which led to problems and put two and two together. But no doubt Haldane et al saw-toothed a whole bunch of hapless goats and showed it was a bad idea.
BTW once, during scientific diving, we did a couple of STP dives in one day, near the end of four weeks repetetive diving (ie diving every day). We were collecting equipment from the sea bed at around 25m and carting it back up to the waiting boat. Neither of us experienced any problems, but by the end of the four weeks I had the most weird fatigue I've ever known, felt totally spaced out |