Oh, dear ... CoolHardLogic has found another one! We now have "B S Detector," a flat-earther holding forth on why he's right and everyone else is wrong. This particular scientific "genius" seems to think that gravity just isn't a thing, as though all the scientific study into that phenomenon over the past 400 or so years just never happened (more likely, BS has never bothered to READ!).
So ... return your seat backs and tray tables to their full upright and locked position, but take that little paper bag out and keep it handy, because the incredible stupidity you are about to be exposed to may cause you to lose your lunch!
Is this guy for real?
Honestly, Joan, I don't think this guy and reality have much to do with each other!