MOST COMMON FALLACIES: #1 AD HOMINEM Definition and explanation: Latin for “to the person,” the ad hominem fallacy is a personal attack. Essentially, instead of addressing the substance of an argument, someone is attempting to discredit the argument by attacking the source. The ad hominem is one of the most common logical fallacies. While it can take many forms — from name calling and insults, to attacking a person’s character, to questioning their motives, to calling them hypocrites — any argum