Begging the question assumes the truth of what it purports to prove.

Evidence

This fallacy is really a first-class rascal because it sneaks up on us so often. It is a species of question-begging that assumes as true what is to be proved. It is to assume the truth of what one seeks to prove in the effort to prove it. — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1162

Categorization

• DEFINE: Defines petitio principii as assuming as true what is to be proved.
• corroborated: 2 independent passages support this claim — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1162
• XREF: connects to: Begging the question is the most litigation-generating logical fault — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1169; Direct evidence proves a fact without requiring inference or presumption — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 231

Broader Connections

• Begging the question is the most litigation-generating logical fault #expands (0.50) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 1169
• Direct evidence proves a fact without requiring inference or presumption #corroborates (0.40) — Ruggero J. Aldisert, Agatha D. Aldisert, Logic for Lawyers- A Guide to Clear…, 231