An informal fallacy fails because its premises are untrue or rules are violated

Evidence

An informal fallacy is one that cannot be detected merely by examining the form of the argument but must be detected in some other way. It is any other argument that does not properly establish the supported conclusion. An argument contains an informal fallacy when at least one of its premises is not true, or when the rules of inference are not properly respected. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 774

Categorization

• corroborated: 2 independent passages support this claim — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 774
• XREF: connects to: Material fallacies emerge from examining term meanings rather than form — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 853; An illicit minor fallacy distributes an undistributed minor premise term — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 867; Logicians and lawyers use fallacy to mean incorrect argument. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 771 (+5 more)

Broader Connections

• A fallacy is an argument that seems valid but fails logic #corroborates (0.80) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 776
• Proving a different point than the actual issue is the fallacy of irrelevance #exemplifies (0.45) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1012
• Relying on isolated phrases ripped from context commits a fallacy #exemplifies (0.40) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1232