5 'extremely rare' iron shackles discovered in France highlight Celtic slave trade 2,300 years ago 40%

By Kristina Killgrove15%

7/13/2026, 7:50:21 PM

BS Summary: This article contains 21 faulty reasoning types, including Confirmation Bias, Appeal to Authority, and Anchoring Bias, with Ambiguity (Equivocation) as the most egregious example at 24.1% saturation with 153 hits. Analysis detected 1,280 faulty-reasoning hits from 635 analyzed words, generating a BS Score of 45% and a BS Rank of 40% (13,220 of 21,887 articles). This article is better (less manipulative) than 60.40% of the article peer group.

Archaeologists have found five pairs of iron shackles at a 2,300-year-old Celtic site in France ‪—‬ a discovery that suggests the small settlement was frequented by metalsmiths and slave traders. 
The "extremely rare" shackles were discovered in the town of Allonnes in France's Loire Valley in 2019, but the finds from the two-year-long excavation were announced to the public on July 9 in a translated statement from the French National Institute for Preventive Archaeological Research (INRAP). 
The settlement at Allonnes was established along with a religious complex in the third century B.C., according to the statement. 
Specialist artisans ‪—‬ including blacksmiths, coppersmiths, bronze workers and sheet-metal workers ‪—‬ plied their trade from small workshops, archaeologists found at Allonnes. 
During the excavation, the team discovered a large number of high-quality metal objects  such as swords, spearheads, keys and horse harness fittings  but the iron shackles were a surprise because they are extremely rare for the time period. 
Excavators found a double-wrist restraint, an ankle restraint and three other portions of metal restraints. 
The presence of shackles suggests that Allonnes may have been a hub for slave trading in the Late Iron Age (450 to 50 B.C.), according to the statement. 
"The identification of restraints and weapons suggests a hierarchical social organization composed of dominant and subordinate groups  prisoners or slaves," Thierry Lejars , a specialist in Celtic metalwork, said in a translated interview with INRAP . 
The Gauls, a loose association of Celtic tribes, were known to enslave prisoners of war, convicts and debtors, according to the statement, and they were often forced to work in the fields . 
These men, women and children then lost their rights and could be bought and sold by their owners. 
Because the Celts did not leave many historical records of their own, however, not much is known about the practice of slavery in pre-Roman Gaul. 
The shackles from Allonnes provide new insight into the lives of people who were typically invisible in historical accounts. 
A drawing of wrist restraints, likely used on women or children, and an ankle shackle. 
(Image credit: © Elven Le Goff, INRAP) The small diameter of the wrist restraint ‪—‬ 2.4 inches (6 centimeters) ‪—‬ suggests it may have been used on a woman or a child, according to the statement. 
And the ankle restraint was over 2.2 pounds (1 kilogram), revealing the weight that enslaved people had to carry around. 
Archaeologists also uncovered a religious sanctuary at Allonnes, along with offerings that included clothing and jewelry such as rings and amulets. 
Many of the offerings had been deliberately deformed or mutilated, likely to transform a mundane possession into a gift for the gods, the statement reported. 
2,000-year-old Celtic teenager may have been sacrificed and considered 'disposable' 
Unusual burials of Celtic 'warriors' discovered in France point to violent deaths 
Archaeologists discover decapitated head the Romans used as a warning to the Celts 
Hundreds of coins were also recovered at the site, and their mint dates spanned more than five centuries, Isabelle Bollard-Raineau , an ancient-coin expert with the French ministry of culture, said in the translated INRAP interview. 
About a third of the coins found at Allonnes had been filed, sheared or etched with a chisel. 
"These mutilations reveal a ritual intention: the removal of the coin's commercial function in order to dedicate the object to the sacred, thereby ensuring the permanence of the offering," Bollard-Raineau said. 
Allonnes was a significant Celtic site at the intersection of several major roads in ancient times, and the analysis of the metal finds has revealed important new information about some of the most powerless members of Gallic society. 
See how much you know about the Celts with our Celtic quiz! 
Article reasoning-pattern comparisonThis article: 20.3%Kristina Killgrove: 4.1%Live Science: 2.7%Confirmation Bias20.3%This article: 15.9%Kristina Killgrove: 1.1%Live Science: 1.2%Anchoring Bias15.9%This article: 4.7%Kristina Killgrove: 2.7%Live Science: 2.7%Availability Heuristic4.7%This article: 14.3%Kristina Killgrove: 2.1%Live Science: 1.4%Representativeness Heuristic14.3%This article: 6.0%Kristina Killgrove: 0.5%Live Science: 0.5%Hindsight Bias6.0%This article: 0.0%Kristina Killgrove: 3.4%Live Science: 3.0%Overconfidence Bias0.0%This article: 10.4%Kristina Killgrove: 1.5%Live Science: 3.3%Framing Effect10.4%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.5%Loss Aversion0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.4%Status Quo Bias0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.2%Sunk Cost Effect0.0%This article: 0.0%Kristina Killgrove: 2.7%Live Science: 3.5%Optimism Bias0.0%This article: 7.1%Kristina Killgrove: 1.3%Live Science: 1.2%Pessimism Bias7.1%This article: 10.7%Kristina Killgrove: 1.5%Live Science: 3.3%Negativity Bias10.7%This article: 0.0%Kristina Killgrove: 0.3%Live Science: 0.6%Self-Serving Bias0.0%This article: 5.8%Kristina Killgrove: 0.7%Live Science: 0.4%Fundamental Attribution Error5.8%This article: 0.0%Kristina Killgrove: 0.3%Live Science: 0.1%Actor-Observer Bias0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.3%In-Group Bias0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.1%Out-Group Homogeneity Bias0.0%This article: 9.0%Kristina Killgrove: 1.7%Live Science: 1.3%Halo Effect9.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Horn Effect0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Dunning-Kruger Effect0.0%This article: 1.9%Kristina Killgrove: 0.3%Live Science: 0.9%Recency Bias1.9%This article: 0.0%Kristina Killgrove: 0.7%Live Science: 0.3%Primacy Effect0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.1%Blind-Spot Bias0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Ad Hominem0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.1%Straw Man0.0%This article: 16.4%Kristina Killgrove: 5.0%Live Science: 4.2%Appeal to Authority16.4%This article: 0.0%Kristina Killgrove: 1.5%Live Science: 1.1%False Dilemma0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.4%Slippery Slope0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Circular Reasoning0.0%This article: 13.9%Kristina Killgrove: 4.9%Live Science: 3.8%Hasty Generalization13.9%This article: 0.0%Kristina Killgrove: 0.5%Live Science: 0.3%Red Herring0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.3%Bandwagon0.0%This article: 6.3%Kristina Killgrove: 1.2%Live Science: 2.3%Appeal to Emotion6.3%This article: 0.0%Kristina Killgrove: 0.7%Live Science: 0.5%Begging the Question0.0%This article: 10.1%Kristina Killgrove: 1.8%Live Science: 2.3%Post Hoc (False Cause)10.1%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Tu Quoque0.0%This article: 0.0%Kristina Killgrove: 0.4%Live Science: 0.4%Burden of Proof0.0%This article: 0.0%Kristina Killgrove: 0.8%Live Science: 0.5%Appeal to Nature0.0%This article: 0.0%Kristina Killgrove: 0.4%Live Science: 0.3%Composition/Division0.0%This article: 9.0%Kristina Killgrove: 1.0%Live Science: 1.8%Anecdotal9.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.1%No True Scotsman0.0%This article: 24.1%Kristina Killgrove: 2.4%Live Science: 1.7%Ambiguity (Equivocation)24.1%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Gambler’s Fallacy0.0%This article: 0.0%Kristina Killgrove: 0.3%Live Science: 0.1%Middle Ground0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.1%Personal Incredulity0.0%This article: 0.0%Kristina Killgrove: 0.1%Live Science: 0.1%Special Pleading0.0%This article: 0.0%Kristina Killgrove: 0.3%Live Science: 0.1%Genetic Fallacy0.0%This article: 9.6%Kristina Killgrove: 1.1%Live Science: 1.5%Unattributed Quote9.6%This article: 0.0%Kristina Killgrove: 0.8%Live Science: 1.0%Quote-first Misdirection0.0%This article: 2.4%Kristina Killgrove: 1.8%Live Science: 3.5%Biased Writer Voice2.4%This article: 1.9%Kristina Killgrove: 1.0%Live Science: 1.0%Indoctrination1.9%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Politically Left Leaning Bias0.0%This article: 0.0%Kristina Killgrove: 0.0%Live Science: 0.0%Politically Right Leaning Bias0.0%This article: 1.9%Kristina Killgrove: 3.0%Live Science: 1.6%Attempt to Sell a Product or S…1.9%

635 words analyzed.

Speakers

2speakers16%attributed speech531writer words
Voice mapSelect a segment to jump to its words
Writer's voice • 15 words • 100.0% coverageWriter's voice • 30 words • 0.0% coverageWriter's voice • 46 words • 0.0% coverageWriter's voice • 20 words • 0.0% coverageWriter's voice • 22 words • 0.0% coverageWriter's voice • 40 words • 0.0% coverageWriter's voice • 15 words • 0.0% coverageWriter's voice • 28 words • 0.0% coverageThierry Lejars • 37 words • 0.0% coverageWriter's voice • 33 words • 0.0% coverageWriter's voice • 18 words • 0.0% coverageWriter's voice • 25 words • 0.0% coverageWriter's voice • 19 words • 0.0% coverageWriter's voice • 15 words • 0.0% coverageWriter's voice • 36 words • 100.0% coverageWriter's voice • 20 words • 0.0% coverageWriter's voice • 21 words • 0.0% coverageWriter's voice • 25 words • 100.0% coverageWriter's voice • 10 words • 0.0% coverageWriter's voice • 12 words • 0.0% coverageWriter's voice • 13 words • 0.0% coverageIsabelle Bollard-Raineau • 36 words • 0.0% coverageWriter's voice • 18 words • 0.0% coverageIsabelle Bollard-Raineau • 31 words • 0.0% coverageWriter's voice • 38 words • 0.0% coverageWriter's voice • 12 words • 100.0% coverage
Selected voice

Thierry Lejars

100%flagged-word coverage
37 attributed words36% of attributed speech86% writer coverage
0%7.5%15.0%Unattributed Quote-11.5 ptsWriter: 11.5%Thierry Lejars: 0.0%0.0%Biased Writer Voice-2.8 ptsWriter: 2.8%Thierry Lejars: 0.0%0.0%Indoctrination-2.3 ptsWriter: 2.3%Thierry Lejars: 0.0%0.0%Attempt to Sell a Product -2.3 ptsWriter: 2.3%Thierry Lejars: 0.0%0.0%

Attribution is sentence-level. Pattern percentages are calculated only from words assigned to that voice.

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Analysis

Hover over highlighted words in the article to view the associated bias or fallacy analysis.