It occurs to me that the concept of a "dangerous idea" might be productively viewed in the context of memetic immunization: ideas are often (but not always) tagged as dangerous because they carry infectious memes, and the concept of dangerous information itself is often rejected because it's frequently hijacked to defend an already internalized infectious memeplex.

Some articles I've read here seem related to this idea in various ways, but I can't find anything in the Sequences or on a search that seems to tackle it directly. Worth writing up as a post?