Calculating relatively basic sums quickly and accurately in the cockpit is a pretty essential task no?
I would rather calculate how much fuel i have available to me 10 times out of 10, than be able to divide by Pi to 20 d.p.s, but only establish how much fuel i have 9 times out of 10.
I definately agree, but knowing where a certain place of interest in a certain place in the world is not...