How to identify the Tu Quoque fallacy?

Why is the hypocrisy diversion used in debates?

The tu quoque fallacy attempts to deflect criticism by accusing the other person of similar behavior. Instead of addressing the original claim, the conversation shifts to alleged hypocrisy.

This fallacy is common in political debates and online arguments. For example, if one person is criticized for misusing data and responds by pointing out a past mistake by their opponent, the original problem remains unaddressed.

To recognize this fallacy, focus on whether the criticism is being answered or merely deflected. The validity of an argument does not depend on the behavior of the person making it.