[westurner]

https://en.wikipedia.org/wiki/Decompression_sickness#Ascent_... :

> DCS [Decompression Sickness] is best known as a diving disorder that affects divers having breathed gas that is at a higher pressure than the surface pressure, owing to the pressure of the surrounding water. The risk of DCS increases when diving for extended periods or at greater depth, without ascending gradually and making the decompression stops needed to slowly reduce the excess pressure of inert gases dissolved in the body.

DCS > Prevention > Underwater diving: https://en.wikipedia.org/wiki/Decompression_sickness#Underwa... :

> Decompression time can be significantly shortened by breathing mixtures containing much less inert gas during the decompression phase of the dive (or pure oxygen at stops in 6 metres (20 ft) of water or less). The reason is that the inert gas outgases at a rate proportional to the difference between the partial pressure of inert gas in the diver's body and its partial pressure in the breathing gas; whereas the likelihood of bubble formation depends on the difference between the inert gas partial pressure in the diver's body and the ambient pressure. Reduction in decompression requirements can also be gained by breathing a nitrox mix during the dive, since less nitrogen will be taken into the body than during the same dive done on air. [85]

[westurner]

> It’s seriously non intuitive to a layman the whole pressure thing.

Is there an issue with the above explanation?