The question is really why people debate Physics or Chemistry. People that thought the Sun was a perfect sphere would discount things they could directly see with their eyes.
The question is really why people debate Physics or Chemistry. People that thought the Sun was a perfect sphere would discount things they could directly see with their eyes.
What do you mean by this? The Sun is, to a very good approximation, a perfect sphere. Or as perfect a sphere as one is likely to find in the physical world.
That's precisely the point. One may argue that the sun being a perfect sphere is a fact, but someone else may also point the facy that the surface of the sun shows significant deviations from the perfect sphere, thus the facy being that the sun is not a sphere.
The thing is, they wouldn't be discussing facts but instead personal opinions based on observations. Thus both would be right and wrong while the facts were still the same.
People had firm belief in the second and discounted evidence to the contrary. Even ignoring that rotation causes a significant distortion (https://www.nasa.gov/topics/solarsystem/features/oblate_sun....) they would not accept https://eclipse2017.nso.edu/coronal-mass-ejections-cme/ as a 'real' thing.