2. The Bandwagon Fallacy (Ad-Populum)

Just because a most of a population of people believe something is true, doesn’t automatically make it true. 

Popularity alone is not enough to validate an argument, though it’s often used as a standalone justification of validity. 

While most of us expect to see bandwagon arguments in advertising (e.g., “three out of four people think X brand of toothpaste cleans teeth best”), this fallacy can easily sneak its way into everyday meetings and conversations.