| Imported post Very sobering reading.
But I agree with Adrian, stats looked at in isolation can be very misleading and I've known a fair few divers who are reasonably sensible suddenly adopt behaviours that contradict all their training, so "grade normalisation" could be seen as somewhat immaterial as there's nothing to stop someone who should know better from following through on ill-concieved dive plans.
Personally, when heading off diving, I always like to bear in mind how my sister would feel if she had to bury another one of her brothers, tends to keep me in the realms of SDPs. |