I'm still a little disappointed with the "it's all a conspiracy" thing Jo pulled after he was shown to be wrong.
Boy, this conspiracy sure covered all its bases! They even manipulated data on the properties of glass.
There are other materials in the glass that could flow to great a bulge. There could be inherent window manufacturing flaws that create imperfections in the windows that lead to the bulge.
It is also possible that the atmolayer is convex, creating the illusion of a curved horizon.
The major air travel sites do not recognize KBJC, or BJC, so it is unlikely I will be able to meet you there EireEngineer.
What needs to be done is someone to inspect a commercial airliner, unfortunately, not many companies will let a FE'er inspect a multi-million dollar investment to prove the earth is flat.