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But that doesn't mean we should use a different dataset. The number of deaths per car accident at 200 km/h is likely a poor predictor of the number of deaths per car accident at 30 km/h. I am not sure which second question you are talking about. If you mean this "Is, for a given dive, a...

I do believe that people are often using data from "do more people die (per dive) on rebreathers than on OC?" to answer "Is, for a given dive, a rebreather much more likely to have me die?". And that makes a difference imo. I'm not trying to "reclassify" deaths on rebreathers, I'm trying to get...

But isn't the average closed circuit dive an order of magnitude more dangerous than that of usual open circuit? Or has that been taken into consideration?

Who needs air anyway.

It's also interesting to read that according to some on this board, that association is "putting everyone at liability", because they say "In the majority of cases, any attempt to provide CPR to a victim is better than no attempt to provide help".

So I'm packing my stuff right now, but I realize I haven't seen much if any pictures of sidemount divers there. Many backmounted twins for sure. Is sidemount frowned upon, or is it just not mainstream at all? I expect some will say "well with rough seas you cant walk on the boat", but the good...

Yeah I'm not much of a words person. However, I have to say that the situation in which each sentence could be said is different. If I were to see a friend planning his 60m dive on a single tank with no back-up, I would say "Doesn't it seem off to you to do such a dive without redundancy?". If...

I don't see any risk in eating pasta, unless they were really bad, so that analogy doesn't suit. If he had said "if you can't afford a redundant setup, why do you dive to 60m?", would that still have hurt your feelings? I certainly hope not. There's no actual need to go that deep, there's plenty...

Sigh.

Do you mean you added that content in brackets yourself?

Well you do look like an obvious candidate for a PFO, so there's that.

I haven't seen anyone say they were going to die. I do have many examples of people that died on or following a dive to 50-ish m on air however. I still won't say that it's going to kill you, what I do say is that deep air seems to help getting yourself in trouble. Current data shows that the...

I originally considered it. But, there's a but. 1) You pay from your own pocket (I'm in Europe, where healthcare is a thing) because it is a luxury thing. This is a minor thing for me though, I do value my health more than 200$ (probable cost of screening, maybe it's a bit more, unlikely to be...

From what I know she has been trained for over a year. Some are accusing "cheap equipment", which is a rubbish idea. Faulty is a possibility, but not faulty because it's cheap. Some say the instructors have diplomas that nobody else recognizes as "diving instructors", I don't know how true and...

Technical divers have been carrying 2 al80 on the same side since about forever, without any real issue, yet you can always find people are arguing about "you need to shift weights for an al20". So there's really no worries to have there. Removing weight because you're aluminium tank is...

Not quite made a friend, I think this was quite the opposite, but maybe some fish psychologist will say it wasn't.

The usual S80 is 14.3kg. (Luxfer at least) 10l tanks vary largely. ~12kg for Faber (some at ~11 also), 232bar 11kg for Roth, 230bar 11.5 (or 15) for ECS So you have on average ~2kg less per tank, 4kg total on a diver. The tanks being smaller makes them easier to handle out of water (torque)...

Didn't know molesting an octopus and walking on coral were part of what was expected of divers. Comprende?

I take it you did not watch that video, or you really would not have linked to something as stupid as that. Only things "needed" for diving is being comfortable underwater and a good swimmer. Not necessarily intense, but I'd say you should be able to swim for a good 5 to 10 minutes at a good...

Well, there's quite some energy in a tank. And on tests where they decapitate a tank, they sure fly far away. And personally I wouldn't want to have my face in front of that thing. But heavy things moving at high velocities and not being properly secured lead to some issues too. @Schwob...