> It's not just someone else's opinion, it's agreed upon opinion Q: Agreed upon by whom? I'm reminded of this quotation: "It ain't what you don't know that g

> It's not just someone else's opinion, it's agreed upon opinion Q: Agreed upon by whom? I'm reminded of this quotation: "It ain't what you don't know that gets you into trouble. It's what you know for sure that just ain't so." which The Big Short (2015) says is Twain but I gather probably isn't.