Plus, if you get to an elevated vantage point, you can WATCH a chemtrailing plane rise up above the horizon, the trail it leaves behind CLEARLY following the curvature exactly as predicted.
What is that prediction? How is the appearance of the chemtrails indicative of curvature?
I do not have a dog in this race. I just want to enjoy the truth.
The prediction is that an object will follow the stated curvature of the earth as it gets further away & that with increased distance this curve will become more pronounced.
It is difficult to be in the correct position to observe chemplanes obeying this prediction; I was lucky inasmuch as I was in an elevated position with clear views to the horizon, & two of them were coming almost directly towards me, one a few minutes after the other, with the dawn sun helping illuminate their trails so as to be clearly visible (they were heading roughly SSE-NNW btw).
As they came over the horizon they appeared to be travelling near vertically, slowly levelling out as they got closer until they were following a horizontal path as they flew overhead.
I did not observe the 1st one come over the horizon, but noticed the trail & initially thought it to be smoke from a power-station or similar due to its near-vertical nature; then I saw it was in fact a chemplane.
The 2nd one was following a similar flight-path though, so I was able to observe its behaviour in its entirety.
This is what I observed, & this observation was in accord with the earth having curvature.
It does not mean the entire earth is curved; but my little bit of it certainly seems to be.
All I can suggest is that you try to make the same observations yourself & draw your own conclusions from them.
I have drawn mine.