@whatzaname @theogrin @migriverat @lillyfinch @JuliusGoat
Facts. People are allowed their own opinions, not their own facts. It's ok to say that something isn't true, esp when you can provide a link\cite\ evidence.
If they go off on conspiracies, request them to provide facts and dismantle them, but one at a time. You can require them to acknowledge a disproved fact before continuing, otherwise they are simply delusional & there's no point continuing.
Let's Assume It's True is a good 2\x