Reasoning within arguments can be bad because it commits either a formal fallacy or an informal fallacy Formal fallacies occur when there is a problem with the form, or structure of the argument. The word"formal"refers to this link to the form of the argument. An argument that contains a formal fallacy will always be invalid. Consider, for example, the following argument 1. If a drink is made with boiling water, it will be hot 2.This drink was not made with boiling water 3.This drink is not hot An informal fallacy is an error in reasoning that occurs due to a problem with the content, rather than mere structure ofthe argumentReasoning within arguments can be bad because it commits either a formal fallacy or an informal fallacy. Formal fallacies occur when there is a problem with the form, or structure, of the argument. The word "formal" refers to this link to the form of the argument. An argument that contains a formal fallacy will always be invalid. Consider, for example, the following argument: 1.If a drink is made with boiling water, it will be hot. 2.This drink was not made with boiling water. 3.This drink is not hot. An informal fallacy is an error in reasoning that occurs due to a problem with the content, rather than mere structure, of the argument