Given that KC's quote/assumption above is correct, the good Professor has obviously never had his life saved by ACAS!
To paraphrase the Goodyear advert "If it only happens once, it's a good year!"
Is this another of the mathematician's figuring that you have to account for pilot error in the scatter of mid-air probabilites, whereas, out there in the REAL world, I see GPS equipped a/c coming DIRECTLY over/above every day I go to work? What if we added 'one mile right' to the above equasion??
Don't mean to hijack the thread.
G'day
