You mean the earth is flat?
No, I mean the earth is not a curve based on a 24,900 miles around.
We are photographers, and if you put the theories of stars and planets as something we have good understanding of, we should be able to measure things.
Any true scientist, researcher, physicist will measure for curvature by the simplest means. If you want empirical evidence, repeatable evidence, observable, quantifiable, you go to a calm body of water and measure for curvature.
If you see things like the Chicago skyline, Balloon video over 100K feet up and see no curve(distance up vs size of earth vs focal length), that is behind the horizon water level, you just found evidence that shows no curve. Oahu from Kauai at sea level (almost 100miles).
And many other tests all around the world. No one should be claiming anything, but the documentation, or evidence if you will showing no curve is growing.
"Light itself is just an illusion". Perhaps, but it is measurable by us to give it some quantity and values. But as landscape photographers, we should be more understanding of how much curve can be perceived or not with our eyes, and some zoom lenses.
As far as the gyro...oddly, or maybe as expected?...there are physicists that dispute Foucault's 1852 findings for rotation.
This was first disputed with the pendulum he was using and then later contested and verified by how the pendulum changes its direction and movement during a solar eclipse. Its either the magnetic fields are being disrupted, as science understands it, OR that or the earth starts to spin another direction. LOL.
So, no I do not believe you are right, as experiments prove it.
Eric, you are being silly. When people claim it is flat, they are just referring to its ground level or sea level plane.
The horizon is said to be flat in their theory, not that there are no peaks or valleys. This is why they use a still body of water to do the test for curve.