> we can only be sure of things we can empirically verify That's a straw man. I never said anything about being sure. We can never be sure about anything.

> we can only be sure of things we can empirically verify That's a straw man. I never said anything about being sure. We can never be sure about anything. Type 2 conspiracy theories might be true. So could last-thursday-ism. The reason these things can be rejected is not because there is evidence against them. Last-thursday-ism might be right. But so could last-wenesday-ism or last-tuesday-ism or last-monday-ism or... Each of these is an instance of a large family of hypotheses, none of which are falsifiable. Only one of them can possibly be right, so even if one of them is right the odds that you've picked the right one are indistinguishable from zero. That is why all unfalsifiable hypotheses can be rejected.