Conspiracy theories are—unfortunately!—nothing new. But, they do seem to be newly energized by the changing landscape of social media communication, entering the mainstream dialogue of democracy in unique ways. For philosophers, one significant aspect of conspiracy theorizing is that "both sides" accuse the other of fairly important lapses or errors in acquiring belief: the Conspiracists are paranoid cherry-pickers; the Sheeple are too trusting of authorities with unknown motives. It would be very handy to have some way to determine not just who is correct in these disputes, but who is thinking most responsibly and carefully about it. Are there typical, characteristic failures in thinking that we can diagnose in conspiracy theorizing? Do established and accepted instances of conspiracies show us that, instead, the mainstream needs to change its ways of thinking? Join us as we "do our own research”!