There is a common belief that everyone already agrees with you and simply needs to have the wool pulled away from their eyes with some simple statements.
And I can't say I've never had this happen to me—there have been ideas I've been exposed to which immediately made sense upon hearing of them—but in general people really do believe the things they believe, even if they don't have actually solid reasons to believe them. And if you want to make change, you need to actually do the hard work of convincing (some, enough) people, talking to them like adults and not like children
