Anecdotal Evidence Fallacy

The anecdotal evidence fallacy is when someone uses a personal experience or an isolated example instead of a sound argument or compelling evidence.

Anecdotes can be be made up, misconstrued or be a statistical outlier which is insignificant when further evidence is considered.

Example

"In my dream today, God appeared, and since something must exist for it to visit me, God exists"

The dream's depiction of a god could simply be a component of the dream, which is completely anecdotal—this could have been made up to support this person's argument. Since the premise is anecdotal, it is impossible to infer its veracity. This is is an example of the anecdotal evidence fallacy.