Certainly, I'm also aware of how difficult it is to implement open dialogue in practice. Perhaps my hope is that general education could help develop that sort of transversal insight that talented scientists use to naturally understand topics which they are not familiar with, by working with analogies and fundamental principles. I know that knowledge of the nitty gritty generally requires years of actually struggling with the thing, and this cannot be asked of any layman. Still, for example, I'm thinking of times when you deal with a topic that is nominally in the same field as yours, but that is so foreign that the only knowledge relevant to it is something barely above undergraduate, say Newton's laws or thermodynamics. Many scientists have managed to either take some lessons from other fields and bring them into theirs, or contribute despite their relative lack of education in that subfield.

I'd like to believe there is a sort of education that allows people not to understand details, but at least to be able to get the rough shape of the topic at hand and shape their ideas in a way that benefits the other party. Perhaps this is just a matter of language and shouldn't need so much more education than the basics and curiosity. Or perhaps it's a pipe dream.

As for the crackpots, well, I know some people spend time and energy with them, but it is hard to believe their true objective is learning or contributing. It is, fortunately, very obvious when you meet one in the wild.