Logic. It is essential for any policy or decision, yet it is routinely ignored. Logical fallacies plague debates and unfortunately, are commonly employed by the inexperienced and the experts alike. This article aims to explain one of them, the appeal to hypocrisy, also known as ‘tu quoque’. The fallacy occurs when one asserts, implies, or tries to discredit an argument as being false by proving that the person who makes the argument does not follow the conclusions of said argument. Essentially, it comes to the conclusion that an argument is wrong because the person who made it does not practice what he preaches, aka a hypocrite. It is a fallacy because even if a person making an argument is a hypocrite, it does not mean that the argument is false. It is a form of ad hominem. For example, Mr. Watiti tells his daughter that she should quit smoking as various studies have shown that it is injurious to health. His daughter retorts by saying, “ Seriously, you’re telling me this?...