Originally Posted by Rochard

What you seem to be missing here is that when you fly the plane changes altitudes multiple times during your flight, and no one notices a thing. When the plane changes altitude to avoid turbulence, no one runs into the cockpit and says "What the fuck is going on". Generally speaking no one notices such changes, and if they do they assume it is routine.

I flew for two hours yesterday and didn't look out the window once. I was busy watching a movie.