So perhaps there are ways to explain away gravity, orbits of planets, what is off the other edge and so on.
The thing that I don't understand is why anyone would be pretending the Earth isn't flat if it was. For thousands of years separate societies all over the world have reached the conclusion the Earth is round, it isn't a new idea and it wasn't an isolated one.
Why would this conspiracy have been running for thousands of years - who gains from it?
It must be something huge, right? Over time millions must have been involved in this if it is a conspiracy being kept from 'the people' and hundreds of thousands more must have been there to enforce this never getting out into the public.