You fail again. Plato's prize student and "the mind of the school" does not debunk a Flat Earth.
Make up your mind. What are you looking for?
Are you looking for historical records of the event(s)?
If so, they have been provided.
If not, then are you looking for the actual science which shows it, in which case stop appealing to history.
No, there was no debunking more than 2000 years ago, it's all more programed lies, lies and more lies. That would mean that 2000 years ago the masses believed Earth to be a sphere.
Complete non-sequitur. Just because it was proven doesn't mean the masses accepted it.
For a lot of the time the masses had more important things to worry about, like not dying of starvation or disease.
It seems you just cling to programmed rejection of reality.
And again, Eratosthenes did not prove Earth was a sphere.
While that was not his intent, he did.
Under the fact that the sun is very far away (not an assumption, a fact, based upon prior observation), the solution to the problem is a spherical Earth.
he's wrong considering refraction.
Refraction will not save you.
It curves light in the wrong direction for your pizza planet.
You can't actually get an accurate measurement when refraction exists.
Do you mean accurate or precise? The 2 are quite different.
Either way, you can, you are just limited by refraction.
It would make it hard to use the equator and the north pole on the equinox to determine the radius of Earth, due to the significant refraction of objects near the horizon. But it wont have a significant impact for measurements regarding objects much higher in the sky.
This is why you have to VERIFY CURVATURE
Which has been done repeatedly, by countless people.
You choosing to ignore that doesn't magically take that away and make it so no one has verified the curvature of Earth. Your wilful ignorance doesn't magically refute a RE.
All it means is you are choosing to ignore reality.