"The switching is as arbitrary as the coriolis effect" - Why is the coriolis effect arbitrary? I believe there are equations that predict both the magnitude and

"The switching is as arbitrary as the coriolis effect" - Why is the coriolis effect arbitrary? I believe there are equations that predict both the magnitude and the direction of deflection. http://en.wikipedia.org/wiki/Coriolis_effect http://en.wikipedia.org/wiki/Coriolis_effect