As an old environmental biology professor once said to me:
"Dilution is the solution to pollution". What are the chances of another
aircraft occupying the exact same airspace at the exact same time as mine?

Well, a mathematics professor will tell you - even a zero probability
event can occur if you give it enough of a chance.

(There is a zero probability that if you pick a random number from zero
to one, you will pick 1/2. Nonetheless, that number =is= there, and it
=can= be picked.)

Jose
--
The price of freedom is... well... freedom.
for Email, make the obvious change in the address.