Speak like an insider! Welcome to Snopestionary, where we’ll define a term or piece of fact-checking lingo that we use on the Snopes team. Have a term you want us to explain? Let us know. The red ...

A quick guide to logical fallacies. Fallacies include ad hominem, appeals to authority, the fallacy fallacy, circular arguments, etc. Popular weight loss medications linked to hidden side effects, ...

As the holidays approach you will probably get into political and cultural debates with family and friends. We at Snopes have put together a guide on the nature of fallacies, particularly false ...

Logical fallacies are flaws in reasoning. They are often called informal fallacies. It's becoming more common for people to call out these fallacies by name. You often hear accusations of people ...

Discover what sunk costs are and how the sunk cost fallacy can impact decision-making in personal and business scenarios.