I'll refer to Steven Pinker's excellent books for much deeper details on this.
I'll refer to Steven Pinker's excellent books for much deeper details on this.
But yes, that's the big question - does rational thought win in the long run? We don't know. And there are indications that some of the "fringe" thoughts that are irrational and harmful have the potential to collapse the marketplace of ideas before they get sorted into the mainstream. (In which case, we, at best, get to start from scratch)
You can look at the collapse of progress in the dark ages. You can look at how dangerously close the world was to a different outcome in WW2. You can look at authoritarianism to day and ask the question "if most of the world swung that way, how would we ever escape that grasp"
And even if it does win in the long run, is there some way we can bias the marketplace away from fringe ideas? Should we? What qualifies as fringe?
All of these are important questions. None of these can be addressed by pretending free expression is really econ101. (Just because we call it a marketplace doesn't really make it one)
As for the critique of Pinker... by focusing on the past few decades, rather than the past few millennia (as Pinker does), it greatly misses the point on many things. If you've read Pinker, you'll see how. If you're just reading critiques of Pinker, well. I have my gripes with him too, but that article is just strawman arguments for the most part.
Leaving it to "experts", and shushing the rabble, makes you vulnerable to the experts. At which point, you want experts you agree with and don't want those you disagree with, based on your lack of expertise. This is just a triumph of authoritarianism and ideology. Which, if it turns out to be correct, is awesome. But what if it's wrong?
This is where Dunning-Krueger shows up uninvited...
To ask "will they get it right?" is misleading - they won't even try.