Skyring wrote:
The difference is that some people actively argue that the earth is not a sphere, whereas those who argue that Paris is not the capital of France so far have kept their activities secret.
If a fact is contentious, then it should be backed up with a cite.
I can't agree with you that flat earthers constitute a sufficiently respectable or large position that we need to treat the roundness of the earth as the sort of fact that necessitates a citation.
--Jimbo