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I am not anxious. It was just a neutral statement, sorry if it came across as anything else. I may simply have overlooked extensive use of caps lock here ;)

I am left handed. I sometimes feel the effect, like with the question on which side weight belts will normally have the buckle. But I try and adapt ;)

I can say for sure that in German there can be cases where upper and lower case can be a case of great concern ;)

Before this thread I actually never noticed that this was a problem here on this board.

I think it is both. Narcosis, like all things that effect cognition, is never disentangled from what the subject makes of it.

To the very best if my knowledge, the Atomic 2nd stages are exactly the same whether you buy a "cold water" (sealed) Z3 regulator set, or a warm water version. The relevant difference is the Christolube - packing of the first stages. I do dive a Z2 second stage in cold water, and as of yet never...

Well that may be, but such a messed up ascent will not be a good experimental set up to answer the question of post-dive tiredness. That manifest DCS risk under identical profiles will be smaller with Nitrox is well tested...

Such studies are normally done by agencies that use scuba divers on specific missions. Thus they will test profiles that are more or less similar to their real life situations. Very aggressive profiles will anyhow bend a lot of divers, which only further complicates the problem of disentangling...

The ROS typically discussed in this context would superoxide(s) and to some extend the hydroxyl ion. Potential (!, this is important, as with many other topics, it will be very hard to arrive at high statistical confidence) pO2 influence on post-dive alertness parameters is discussed in...

It stands to reason however that for many real profiles, people will simply incur more stress due to radical oxygen species for reduced decompression stress. The most simple explanation, and one that is not in conflict with any scientific study, for the many people that feel less tired with...

I am not concerned about me. But as said, the number of divers and the number of soft lead packages for some lakes for sure will be noticeable.

The "lead" part is especially strange, as some divers will carry kilograms of lead in the bag...actually, in the quantities we use while diving one can really wonder if this is healthy. For us, but also for the marine environment. Although of course there exist sealed solid blocks. I have to say...

Hi, I would actually say the DM made a pretty reasonable suggestion. You will learn a lot about gas management and diving physics during the deep and nitrox courses. I would consider this combination a much deeper education than PADI AOWD. I also do not share the view that CMAS** would be...

It may of course be different for other people, but at least for me the concept of risk only becomes a useful quantity when I can compare it to other things in life.

Interesting. Myself, I often happen to think that driving my car is very unforgiving compared to diving, as in the former activity a split second of distraction can have irrecoverable consequences...

Yes of course, everyone has to make their own evaluation of what risk is acceptable for which subjective benefit. I am just saying that I very much like any educational statement to be phrased in the relevant context. I am against anyone saying that the risk in scuba diving was zero, as this is...

Kay Dee, the point is that mathematically nothing at all will ever be "safe". You see it in your posting: First you are saying that you think I am "dead wrong in implying it is a 'safe' activity.". Then, literally two sentences on, you are saying "That the dive industry implies it is 'safe' is...

I do not think a thread about one specific accident is an ideal place to discuss a very general risk level. This because when thinking of single events, one can sometimes (but less often than is claimed on such occasions) single out causes and mitigate future risks. But the general risk level...

There is an O-Ring on the first stage, on the front end of the thread, which provides the seal...

Indeed, and as I wrote already hours ago, the drag is the one thing that really may be different between total flooding and total implosion. But as a scooter would anyhow have to drag down a diver, the absolute difference would still be small...