Definition
Fatuum judicium is a Latin phrase meaning "foolish judgment" or "foolish verdict." In legal usage, it describes a judicial determination or jury verdict that is erroneous by reason of incompetence, poor reasoning, or folly — as distinguished from one that is false by reason of corrupt intent or deliberate wrongdoing. The term captures a specific gradation: the decision or verdict is defective enough to be condemned as foolish, yet falls short of the graver charge of perjury or fraud.
Common Confusion
The central distinction built into the term is the line between foolishness and criminality. A fatuum judicium is not a corrupt verdict or a willfully false one — it does not carry the moral weight of perjury. A verdict produced by jury misconduct, bribery, or deliberate falsification would be a separate category of wrong. Fatuum judicium occupies the middle ground: the verdict or judgment fails, but the failure is attributed to stupidity or folly rather than to malice. Researchers who encounter this phrase in medieval or early modern sources should resist reading it as an accusation of dishonesty; it is closer to an accusation of incompetence.
Why It Matters in Research
Fatuum judicium is a term of medieval common law that rarely survives into modern legal usage in any functional sense. Researchers are most likely to encounter it in three contexts: (1) Bracton's De Legibus et Consuetudinibus Angliae and glosses on it, where the conceptual framework for evaluating verdicts and judgments was being developed; (2) early common law pleading records where attaint proceedings — the mechanism for challenging a false verdict by a jury — distinguish between grades of jury failure; and (3) historical legal dictionaries that preserve Latin maxims as a bridge to understanding pre-modern doctrine.
The term matters for corpus research primarily as a navigational signal. When fatuum judicium appears in a source, it typically indicates the text is operating within a Bractonian or post-Bractonian framework for analyzing jury verdicts, not a modern appellate review context. The underlying concern — how to classify and respond to a defective verdict — has obvious modern descendants in doctrines governing new trials, judgment notwithstanding the verdict, and sufficiency of the evidence, but those modern doctrines do not use this term and do not track its specific gradations.
Researchers tracing the history of attaint — the old writ by which a jury of twenty-four could override a verdict of twelve on the ground that the original jury gave a false verdict — will find fatuum judicium useful as a conceptual marker distinguishing foolish verdicts from perjured ones, since the consequences and procedures differed. Attaint targeted the more serious, corrupt failure; fatuum judicium points toward a lesser, remedial category.
Historical Dictionary Support
Bouvier's Law Dictionary defines fatuum judicium as "a foolish judgment or verdict," adding that as applied to a verdict it is "one rather false by reason of folly than criminally so as amounting to perjury." Bouvier cites Bracton at folio 289, which remains the foundational primary source for this usage.
Bouvier's treatment is spare but accurate. It correctly identifies the two-part structure of the term — the general sense (foolish judgment) and the more specific application to verdicts — and correctly places the moral distinction between folly and criminality at the center of the concept. What Bouvier does not do, and what no standard historical dictionary fully addresses, is situate the term within the procedural apparatus that gave it practical significance: the attaint proceeding and the broader medieval English law of jury control. A researcher relying on Bouvier alone will understand the definition but may underestimate how specifically this gradation of verdict-failure was tied to specific remedial consequences in medieval practice.
No other source dictionaries in the present corpus provide an entry for this term. The absence is not surprising — fatuum judicium had ceased to have active procedural significance well before the period when most standard legal dictionaries were compiled.
Jurisdictional Note
This term has no meaningful jurisdictional variation in modern law because it no longer functions as operative legal doctrine in any common law jurisdiction. Its significance is historical and applies primarily to English common law before the abolition of attaint.