Earlier quoted context omitted.
> I believe in shining a light on them I hear this a lot. Light is the best disinfectant. What evidence do you have for this? I've never seen a bad or immoral or harmful idea die out when more people learn about it and scrutinize it. However, I have repeatedly seen the opposite: Sharing bad ideas increases their audience, increases ignorance, hate, fear, and human suffering. You're looking at an article describing th…
> What evidence do you have for this? I've never seen a bad or immoral or harmful idea die out when more people learn about it and scrutinize it. There is a significant amount of evidence for it. For example, one could measure the effects of showing people fact-checks, and it has been demonstrated that it does indeed work: https://en.wikipedia.org/wiki/Fact-checking#Effects And there are countless ideas that have die…
That people thought the Earth was flat before Galileo is a meme. Even Ancient Greeks knew it was round.
> pro-slavery views
In 1776, America is born with its Freedom(TM). In 1829, Mexico abolishes slavery. In 1835, Texas revolts, resulting in Republic of Texas (1836), which then merges with the US (1846), which triggers the Mexican-American War (1846-1848), which leads to, among other things, recognition that Texas is a part of a slave-holding nation. Slavery won't be abolished until the Civil War (1861-1865).
In the end, slavery wasn't abolished by debates: it was abolished by literally sending troops to shoot slave owners.
> communism
Karl Marx wrote Das Kapital in London while writing articles for New-York Daily Tribune. Whatever its merits are, his ideas were widely known throughout Europe, and still accepted widely enough to turn Russia into Soviet Union.