Your reasoning is incorrect due to the fact that the probability is simply for the average case.<p>Just because the chance of it happening is small, does not mean you will have to try 1 quadrillion per second for 10 quadrillion years before a collision occurs.<p>Granted collisions may not occur frequently, but a collision could occur at any time.<p>FYI, procedures like these would not pass the FAA code regulations for airlines.