Just a thought experiment, let’s say the earth is flat, looks like many professionals would know, including
-
Pilots/ATC/sea captain
-
Land surveyor and civil engineers
-
Astronomers and Geologists, at least the one dealing with experimental data
-
Militaries, at least radar operator and artillery
Just these categories are already a lot of persons, I assume I miss a lot of others. So how many person does it make in total ? 10 % of the population ?
More or less… good estimate BTW.
In any case, a lot of people… way too many to cover up a lie that big.