wind and its effects on climbing A/C
Ferris - the amount of difference in wind speed/direction required to make putting a/c a dangerous proposition would be immense and unheard of within close band levels.
You talk about people not being able to do the calculations to work out how much wind would be required to move the aircraft in question; so what???
I assume you do not know how to work it out either, or you would realise that it would be too complicated, and would need additional information from the pilot to work it out rapidly when controlling aircraft.
However, whether you know how to go about working it out or not is a moot point - though I would be interested in watching any ATCO performing such an in depth geometric calculation whilst on radar - the fact is, the difference in wind being experienced by two a/c in such proximity needed to create such a phenomenon would be akin to divine intervention. And if that happened, we may as well hang up our headsets and let the ethereal beings get on with it.