The anecdotal fallacy uses a personal experience or an isolated example instead of a sound argument.
Example of Anecdotal
This is a common fallacy.
- Leanne thinks smoking does not affect life expectancy since her grandmother smoked for 4 decades and lived to be 87. The fact that Leanne's grandmother's smoking did not result in cancer or other kind of disease, does not mean that someone else with the same behavior would have had the same result.
- I have never seen a happy marriage. Getting married is a bad idea. Even though the speaker has only seen unhappy marriages, it does not mean that there are no happy marriages and that people should avoid getting married.