I read a book once where one of the setting elements was the idea of spam filters combined with shared blacklists taken a few more logical steps. Everyone had

I read a book once where one of the setting elements was the idea of spam filters combined with shared blacklists taken a few more logical steps. Everyone had embedded AR right in their heads, and it was possible to basically edit someone entirely out of your reality. People could and did subscribe to shared blocklists just like we already do for say ublock origin, and some lists were essentially defaults that practically everyone used, so anyone in one of those lists was invisible to essentially everyone. And people got into these lists merely for being annoying or disliked for any reason, not necessarily for any actual wrongdoing. Enemies of any sort like business or political rivals could get anyone they didn't like erased just by getting a few other people to decide they don't like them. Often the most correct people are the least liked by everyone else, because they say things no one else wants to hear. And of course that's exactly what happens in the story. Someone knows about an impending disaster, it might have been aliens or AIs or currently in-power leaders corroborating with both of those, whatever it was, it was real and the protagonists knew about it, and could not tell anyone about it, because everyone had voluntarily given themselves this handicap. I don't know what to tell you about the less dangerous normal limited sorts of filtering we have now. Obviously filtering out an individual on HN would harm no one, not even them. It would still not be actually dangerous even if there were popularity contest shared blocklists and they got filtered by everyone on HN, since it would still just be HN. But every time I hear the idea of filtering out people rather than spam or ads or malware etc, but people, regardless of what they might say, I think it is a self-inflicted maiming like having no pain receptors. There is something going on where this idea seems good because right now we can't actually do it very much, but what about next week when we can do it way way more effectively? If it's not still a good idea then, then I think that must mean it's not a good idea period. There are people I would filter too. I'm not claiming to be any better. I just think there is a problem that needs to be thougt about.