> Interesting, but how's it work out when people believe in "alternative facts"?

I think the first step is always to separate a fact (I.e., X happened), from why did X happen. Afterwards, you move towards the steps that could prevent X from happening, or reactive protocols to X that minimize the chance of conspiracy theories, etc.

Of course it will not work with all, but, in my opinion, with enough of “alternative facts” lovers that it will be sufficient.