I’m thinking of things like heliocentrism where there was some modern discovery or revelation by science that invalidated a common assumption prior.
My understanding is that flat earth is more a recent phenomena but I’d love to hear some ancient ideas people now miss. Did people think trees weren’t alive? Did people think evaporation was where things simply disappeared?
I’d would love to hear these ideas.
Some beliefs along these lines have been used more recently in extremely religious places like Saudi Arabia.
From 2013, a cleric’s arguments to deny Saudi women the right to drive
Thankfully the ban on women drivers in Saudi Arabia was lifted in June 2018, but it took a lot to get there.