Not all bad ideas are so easily brushed off as being "totally laughable". For example a common and particularly insidious one that gets a lot of "logical" peop

Not all bad ideas are so easily brushed off as being "totally laughable". For example a common and particularly insidious one that gets a lot of "logical" people who think of themselves as good critical thinkers is tying IQ to genetics. This leads people down the path of [IQ is largely determined by genetics] => [X impoverished group has a lower IQ] => [Because of their IQ they are impoverished] => [White people are superior]. Looking at that line of thinking it's ridiculous, there are assumptions and a gross misunderstanding of correlation and causation and confounding factors. But if you are not educated enough to see the problems in those arguments (which I think would be a higher level of education required than believing in flat earth) or if you are a little bit inclined to let someone walk you down a "logical" path of fallacies then it's easy to make that leap. And that's an easy argument for a white nationalist to make. It's a lot less easy for someone to refute it.