I think anti-vaxxers and people who reject modern medicine in general predate Facebook. You know, Steve Jobs managed to get himself killed by trying to cure his

I think anti-vaxxers and people who reject modern medicine in general predate Facebook. You know, Steve Jobs managed to get himself killed by trying to cure his cancer using homeopathic/spirit medicine and I don't think he was brainwashed by random people on his Facebook news feed. His fatal attraction to 'alternative medicine' can be traced back to his hippie roots travelling through India: https://www.telegraph.co.uk/technology/apple/8841347/Steve-Jobs-regretted-trying-to-beat-cancer-with-alternative-medicine-for-so-long.html https://www.telegraph.co.uk/technology/apple/8841347/Steve-J... The MMR autism scare originates in the early 1990s so it predates widespread usage of the web, let alone social networks. Vaccines are an especially difficult case that are structurally guaranteed to produce something like the modern anti-vaxx movement, no help from Facebook needed. It's a classic tragedy of the commons. The logic goes like this: 1. Vaccines are complex and new, and involve injecting my kids with some kind of modified viruses. I heard from other parents that there might sometimes be side effects. 2. Medicines frequently have side effects so I can believe that. Even if it's very rare, side effects are bad. I don't want to take the risk of harming my kids. Keeping my kids safe is my number 1 priority as a parent. 3. But I could opt out. I'm allowed to, and I learned about herd immunity. If I quietly avoid vaccinating my kids I eliminate 100% of the risk because other parents are taking it for me. 4. Why would I not opt out? Even if I think the risk of taking a vaccine is only 0.1% that's still more than zero, and my child's welfare is the most important thing in my universe. If I gambled and lost I would never forgive myself. Opting out is the responsible thing to do. In other words being anti-vaxx only looks stupid from a society-wide level. From the perspective of a parent who doesn't care about wider social trends but only their own kids, opting out appears to make sense for as long as they believe herd immunity exists, and it doesn't matter how often you tell people there's no real risks: nobody sane believes experts are always right and it's hard for someone to know what the risk "really" is, they can only go on what they themselves have heard from various sources of differing reliability. The fix for tragic commons is usually a law and that'll be the fix here too. Facebook is really just irrelevant. Trying to suppress anti-vaxx speech will just make the problem worse because it looks like a coverup. Censorship is the last resort of people who lost an argument after all.