We •also• want forces that pull toward convergence and consesnsus: forces that challenge ideas with contrary evidence — and forces that challenge vile ideas with “ugh, wtf, go away you Nazi turd.”
Yes, the latter too! Filtering is a crucial part of free society. You can’t have a useful discussion about climate change or global trade or time zones if you always set aside plenty of time for dingbats who insist the Earth is flat.
It’s not that people don’t think that! It’s that the idea deserves no more time and attention than that necessary to refute it — because it’s absurd and harmful and counterproductive.
3/