Some personal observations. Most people are open to discussion. They are often persuaded by solipcism or incomplete logic. This is something i do not know how to amend, because they are doing their best but were mind infected by bad agents. I can go one by one and say things that lead to them coming to their own realizations but thats about it. Then there is the bad agents. Oh boy, is there anything to do about that?
Keep having open discussions and encourage critical thinking.