Correct. If members are gonna try to type at SS, up to the last minute like they sometimes do with SN, it will be incomplete reports, truncating the complete picture. I believe they may be able to communicate the best part (IF they manage to, it remains to be proven until when they can perform on their own impulse without being directed), rendering it as enviable potentially, separating away from the part where it could go sensitively downhill, like meeting more symptoms (that failure at 6% O2 fighting), and the final outcome with issues. I don't think it will carry full value, maybe even misrepresent .
A man writing his address normally
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Now under hypoxia from the decompression chamber. He just stops writing. And that's not too late in the process, still aware when feeling internalised happiness
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Interesting to note : "exposed to air at a third of the amount of oxygen" , so approx. ~7% (important target) which makes it a matching documentation, if only more abrupt than with the ReBreather (symptoms will have more time to install themselves, may be more gentle from the acclimatation ?). Still, the volunteer has a good amount of time in front of him : this is not the Exit bag
Note the symptoms revealed : tingling in hands (one of the rare ones, we'll see later), light headedness (common), gradual impairment at performing basic tasks and responding to stimulus - vocal orders (common, not measured by the person), paleness, euphoria (felt - great way to leave the world)
This video is even more self-explanatory : wise alert chap turns as a baby child or senile man regarding abilities and reactions.
Ideally, these look like the best conditions with no discomfort symptoms objectively felt, quite the opposite, with the simple joy to go as an unaware retarded person.
But they're to be nuanced. Not everyone will respond this way according to the documentation available to airline pilots, which insists that the developing symptoms can vary
markedly from one person to another.
However, the slippery slope is clear that it can become out of control. If something were to go wrong at an advanced stage (i.e. generalised convulsion is possible), catching you between a rock and a hard place, without the conscious power to fix it for some time, I believe it's the reason why the injury risk should not be entirely regarded as null with this method.