On: Two days in an underwater cave running out of oxyg...

[harpiaharpyja]

Not GP but I believe he is saying that unless we've been in an underwater cave the diver's perspective may be difficult for us to really appreciate.

To us, continuing to dive seems like an unacceptable risk. To the diver, it seemingly is not.

Along the same vein I believe GP then goes on to say that he does not feel that the diver's perspective is less valid just because he (the GP) doesn't understand it.

[Chris2048 → harpiaharpyja]

But what's the difference?

Either it's risky, or it isn't? If the diver has good reason to think that it isn't, fair enough. But is that the case?

[gpawl → Chris2048]

risk is easy to calculate. reward is not.