For example, imagine Skeptics StackExchange existed 500 years ago and the question was asked:
"Is the heliocentric model correct?"
I'd imagine that the answer "No it's false (and here's my reasoning)" would get the most votes.
And Galileo's answer of "Yes it's true (and here's my reasoning)" would get downvoted by a lot of people.
Another way of asking this question is "What proportion of top voted answers on this site will turn out to be false in the future?"