Ian Stirling wrote:

While 5 psi works for most people, there are significant health benefits
for some at 14PSI.

I remember O'Neill suggested 1/2 pressure with twice the percentage of oxygen.
Are you saying that might be a mistake?

I've since seen others suggest even thinner atmospheres with even higher O2
percentages. It makes sense to me that that past a point you've gone too far,
but I'd like a better handle on where those limits are.

--


Regards,
Mike Combs
----------------------------------------------------------------------
We should ask, critically and with appeal to the numbers, whether the
best site for a growing advancing industrial society is Earth, the
Moon, Mars, some other planet, or somewhere else entirely.
Surprisingly, the answer will be inescapable - the best site is
"somewhere else entirely."

Gerard O'Neill - "The High Frontier"