Things which were at one point considered "dangerous misinformation": 1) Slavery is immoral 2) Black people should be allowed to vote 3) Women should be allo

Things which were at one point considered "dangerous misinformation": 1) Slavery is immoral 2) Black people should be allowed to vote 3) Women should be allowed to vote 4) Bacteria exists 5) The earth is round 6) You can question the church etc. Now that is not to say that "vaccines may carry more risk than is being reported" is correct, and should be placed next to "black people should be allowed to vote". However, if the anti-misinformation crowd is allowed to reach their conclusion, then we will never be able to challenge the orthodoxy again. As a side note; is this all the result of people not learning philosophy in school? It's legitimately horrifying to me that so many people have no concept of what it means for something to even be true, or how we could reach consensus on that. What does it mean to "know" something, what is the purpose of dialog, etc.