Most people don't know that a major reason why pilot training takes so long is because inflight calculations are done based on latitude and longitude, but it all has to be converted into a regular grid otherwise we'd get lost EVERY FLIGHT. It takes years to be able to do that correctly and safely, and its a wonder we ever get where we're going. So thank your pilots and be thankful they've undergone years and years of training to be able to navigate using both curved and flat earth mathematics.