The vast majority of people are not that great at statistics. Even something as banal as "correlation is not causation, and can often be explained by a common c

The vast majority of people are not that great at statistics. Even something as banal as "correlation is not causation, and can often be explained by a common cause" will blow a fair few minds (e.g. telling most people that old chestnut about how the murder rate is correlated with ice cream sales).