In this talk Professor Sir Richard Evans FBA looks at recent and current conspiracy theories research to come up with some surprising answers.

Conspiracy theories seem to be everywhere nowadays, encouraged by the internet, and perhaps also by postmodern scepticism. But are they really more common than they used to be, and if so, do they constitute a threat to democracy, as a number of commentators have argued? Are they indeed more prevalent in democracies than in dictatorships?