"We have a marketplace of ideas where bad ideas die and good ideas spread." Perhaps it should work that way, but in a US context, I think this is demonstrably

"We have a marketplace of ideas where bad ideas die and good ideas spread." Perhaps it should work that way, but in a US context, I think this is demonstrably false. Many people participating in the marketplace of ideas hold diametrically opposing ideas and posit contradictory facts. There is no winnowing of falsehood from truth.