So I can’t find it now, but in one of the many threads about arguing with thanksgiving relatives someone linked an article about how to talk to people with different political opinions. The idea was you get people to be as specific as possible and as they try to be specific they start to realize they aren’t as certain as they thought.
The example given was an experiment where they asked people if they knew how toilets work. Of course most people say yes. Then they ask them to explain in as much detail as possible how they work. As people try to give details they realize they don’t know as much as they thought and they come down from their position of certainty and become more open to learning.
How much do you need to know to know that water pressure has nothing to do with how much water comes out when you flush a toilet, but rather affects how long it takes for the toilet to refill and be ready for another flush?