This is a total lack of understanding of relative motion. *** The air, the ground and you are moving AT THE SAME SPEED! *** Things don't just stop moving when you jump in the air. You jump in an arc! See my proof No 213. Whatever speed you are going flat Earth or spinning globe, the net velocity is always THE SAME! No 213) RELATIVE SPEED/RELATIVE MOTION: Aircraft and the wind/atmosphere don't suddenly start going 1039 mph when you leave the ground! ----------- - Regardless if you are on a flat Earth or rotating globe, since the atmosphere is moving with the ground, the effect of any rotation is zero! - If we do the speed calculations we find that the net effect, in both cases is the same! (See figures 1 to 8) No 213-1) Explanation for calculations of relative velocities. (See Diagram No 213-1) No 213-2) Plane, airport and wind all stationary relative to each other. No 213-3) Airport and wind stationary relative to each other and plane flying East AWAY from the airport at 500 mph. No 213-4) Airport and wind stationary relative to each other and plane flying WEST TOWARDS the airport at 500 mph. No 213-5) Airport stationary With wind going East at 100 mph and plane going east at 500 mph, relative to the airport. No 213-6) Airport stationary With wind going East at 100 mph and plane going west 500 mph, relative to the airport. No 213-7) Airport stationary With wind going west at 100 mph and plane going east 500 mph, relative to the airport. No 213-8) Airport stationary With wind going west at 100 mph and plane going west 500 mph, relative to the airport. No 213-9) Notice, no matter what speed you are going and the wind is going, relative to the airport and each other, the NET speed is the same in BOTH cases, flat Earth or rotating globe. *** You simply can't tell the difference regardless of FE constantly harking on 1039 mph! ***