And some people are just stupid or panic. i.e. we were doing our deep dive speciality qualifying dives around 30 meters and one person ran low on air I’m thinking below at +- 50 bar either for worrying about what others might think or just not paying attention. We were a group of about 8 and by the time we were doing our last safety stop because of this person it had caused a cascaded effect and 4 people were buddy breathing off the other 4 people. So we were all in an emergency situation as per 1 or maybe 2 divers stupidity or over site. The more diving becomes recreational the more we might be finding people with bad judgement and stupidity in times. Granted me and these people should have been so shit scared that this should not have been possible but it did and we all recovered safely with no incident besides for the instructor wanting to fail us all :)