“Plausibility structures” is the term employed by American sociologist, Peter Berger. It describes the preconceived personal and cultural assumptions we all hold and inform us what can and can’t be believed.
Plausibility Structures help explain how some people persist in believing things that aren’t true and other disbelieve what is true. No matter what the evidence, if it doesn’t conform to their preconceived expectations of plausibility, they will not accept it.
For example, there is just as much historical evidence suggesting Jesus existed than there is that Tiberius Caesar conquered the Gauls (perhaps more). But which is more plausible in Australia today?