It really starts with education. You can't rely on teaching critical thinking skills to people who are already adults with set views (We should still absolutely try to do this too, but...) it's more important to teach this skills to children or teenagers, because then people can begin to engage with knowledge in a more dynamic way, where we can share information, argue perspectives, and develop a smarter generation for the future. Many schools are already having kids participate in Socratic Seminars, or small group discussions where they are asked to think about a topic from multiple perspectives, or to defend their own opinions. Kids. 13 year olds. I have four step sisters who've gone through that stuff in school, and they didn't enjoy it much, but I feel it's helped them to learn better CT skills.