Dan G wrote:
Also agree with Ian - being perhaps a little tired (and who hasn't
flown a bit tired, especially towards the end of a long flight?) is
safer than vomiting all over the controls! The obvious rejoinder is
not to fly at all, but that may not be acceptable to the person
concerned.

This will obviously depend on just how tired we're talking, and also
personal experience, but speaking for myself as someone who's done both, I
would *vastly* prefer being a little tired. Recovery from airsickness is
faster but the episode itself is much more impairing and dangerous.

--
Michael Ash
Rogue Amoeba Software