Obviously things fall down. How does it happen? You subscribe to a model that cannot be proven any more effective than countless- possibly infinite other models.
the earth is flat
The same constellations forever. We can see too far. The bible and other ancient religions. I can't prove its flat but there are many reasons I believe.
No the earth is a circle cause obviously you can't walk on soemthing that's 100% flat youd fall off the instant it tilts
They haven't. It's all a big show. Most people wouldn't bother looking into it. So the ones who do and see how fake it all is are outliers, and thus crazy.