Post Hoc Ergo Propter Hoc This is perhaps the most common of logical fallacies. It follows the basic format of A preceded B, therefore A caused B, assuming cause and effect for two events just because they are temporally related (the Latin translates to “after this, therefore because of this”). This logical fallacy is frequently invoked when defending various forms of alternative medicine—I was sick, I took treatment A, I got better, therefore treatment A made me better. This is a logical fallacy because it is possible to have recovered from an illness without any treatment.
