Richard Wilson's Figurative Constraint: A Critical Review
Iconic affordance, anatomical convergence, stacked constraints, pareidolia and the statistical questions left unanswered by the 2026 Fontmaure presentation.
In January 2026, Richard Wilson wrote to me:
I have spent some time reading through your site and blog material
He proceeded to explain that much of what I had presented as pioneering research had already been discussed for more than a century.
Interesting.
On 6 June 2026, Wilson delivered Bear-like Forms at Fontmaure? Testing Figurative Constraint in Neanderthal Lithics at the Prehistoric Society's York conference.
His presentation introduced a six-component assessment of what he calls "iconic affordance", incorporating anatomical convergence, modification, orientation, recurring patterns and material properties.
These are closely related to the methodological questions I have been investigating and publishing for years.
Wilson's familiarity with my work is not speculation. He acknowledged reading it.
So what exactly is new about his latest methodology, what was already established, and where did the individual components originate?
1. Figurative Constraint versus Image Logic and Stacked Constraints
My research distinguishes two related evidential problems.
Tool Logic: Does the physical evidence demonstrate human modification, including coherent flake removals, fracture characteristics and technological organisation?
Image Logic: Do physically grounded features form anatomically coherent, recurring and recognisable representations?
My Stacked Constraints approach examines the combined significance of these observations, rather than relying on any single resemblance or modification.
Now compare this with Wilson's six iconic affordance criteria on slide 8 of his 2026 presentation.
| Wilson's 2026 terminology | Closely corresponding elements of my research |
|---|---|
| Consistency of perceived form | Coherent Image Logic and anatomical consistency |
| Anatomical convergence | Anatomical topology, proportions and related visual features |
| Modification–affordance alignment | Technical grounding; flaking and modifications corresponding to figurative features |
| Orientation stability | Natural presentation, hand-fit and orientation |
| Patterned/composite complexity | Recurring motifs, combinations of features and assemblage repetition |
| Material salience | Patina, surface properties, inclusions and other material evidence |
These are not identical frameworks, and the criteria do not appear in precisely the same order.
Nevertheless, the correspondence in their analytical functions is substantial.
My May 2017 publication Eoliths, flint tools and figure stones, examined the combined probability of anatomically related features, flake removal, repeated topology and perceived imagery.
I specifically considered the significance of eye-like features occurring alongside correctly positioned mouths, ears, noses and other details.
My 2021 portable rock art article explored visual triggers, partial recognition, multiple imagery and orientation.
My subsequent Flint Flake Mechanics and Stacked Constraints work formalised the physical agency argument, while my Eoliths.org identification methodology brings the mechanical and visual assessments together.
The important similarity is not any single criterion. It is the combination of criteria into an assessment intended to distinguish accidental resemblance from physically supported figuration.
2. The Statistical Problem: Counting Bears Is Not Testing Their Anatomy
Wilson's 2018 Fontmaure paper, Eschewing Bear Tracks, examined 501 lithic specimens (he claims, as there are not 501 different 'bear' items in the paper).
His principal statistical tables classified the perceived imagery and recorded 467 specimens as apparently iconographic.
But where was the systematic statistical examination of the actual anatomical features?
How many specimens possessed recognisable eyes, ears, noses and muzzles?
How frequently did these occur in appropriate anatomical relationships?
How many features coincided with demonstrable flake removals or retouch?
How many specimens displayed corresponding imagery on opposite faces or through rotation?
And how did these combinations compare with a properly selected natural control sample?
These are the questions that test whether combinations of physical and anatomical features provide evidence beyond subjective resemblance.
Wilson was already observing such features in 2018. Indeed, his published reply reported that 86 of 483 modified specimens, approximately 18%, exhibited related bear interpretations following rotation.
Yet his main statistical tables did not systematically present joint frequencies for the anatomical and mechanical features supporting those interpretations.
The comparison also encountered a serious sampling problem.
His Table 1 recorded perceived iconography in 93.2% of modified specimens and 94.4% of the unmodified specimens.
Wilson subsequently acknowledged that the unmodified stones had been selected for their apparent imagery and were therefore not directly comparable.
He reported a further comparison using 100 unmodified stones, but that did not supply the missing feature-by-feature model.
If anatomical convergence and modification alignment are central to the 2026 framework, why were these relationships not comprehensively quantified in the 2018 study?
3. From Cumulative Observations to Probability: Where Is the Actual Test?
Wilson's 2010 paper, Cultural Cobbles or a Load of Cobblers?, already discussed multiple visual cues, possible modification and the cumulative significance of features suggestive of intentionality.
That is an important precedent.
But the paper did not publish a calibrated probability model for combined anatomical and mechanical constraints. Wilson stated that the detailed results of one visual-cue assessment were omitted.
In my 2017 article, I explicitly explored a hypothetical probability problem: a spot and curved feature combining to form an apparent eye, followed by the additional conditions required for anatomically appropriate ears, mouth, nose and other features.
The point was that several coordinated physical conditions present a different chance problem from an isolated resemblance.
That was an illustrative probability argument, not a completed statistical model. A rigorous test would also need to account for dependence between features.
Interestingly, in his 2018 published response, Wilson expressed the ambition to develop an attribute-based system producing realistic probability ratings.
Now, eight years later, his 2026 presentation offers six descriptive criteria.
But where are their empirically established weights, combined probabilities, control distributions or demonstrated likelihood ratios?
Slide 18 still identifies independent observer validation as a future step.
In 2018 he proposed probability ratings. In 2026 he presents a more formal vocabulary. Where are the probabilities?
A graded rubric may be useful, but assigning criteria and calculating their evidential significance are not the same achievement.
4. If It Was Established a Century Ago, Identify the Method
Wilson's January 2026 email dismissed claims of pioneering work by invoking historical archaeological research, including Boucher de Perthes, Rutot, Commont, Boule, Breuil and Bednarik.
In our later exchange, he pointed to Raymond, Hervé and Dharvent.
Brett: Well Richard, there are certainly some rather shocking similarities between your presentation and my own published work on flint flake mechanics, stacked constraints, recurring anatomical patterns, portable rock art and pareidolia. Repackaging these ideas under terms such as "figurative constraint" and "iconic affordance" doesn't make those parallels disappear. Given your prior familiarity with my research, I would like a direct explanation from you as to how you arrived at these remarkably similar arguments and methodologies without any acknowledgement of my work. Are you claiming these ideas were developed entirely independently, or has my research influenced your approach? I would appreciate a clear, specific answer rather than a general dismissal of the similarities. What I find particularly remarkable is the reliance on arguments about repetition, probability and coincidence from someone who appears to struggle with even the basics of statistical reasoning.
Richard: And this is the point where my limited patience runs dry, I've referenced the original people Raymond, Herve, and Dharwent.
Their historical relevance to the study of eoliths, lithic modification and figure stones is not disputed.
But a historical discussion of suggestive stones does not, by itself, establish the origin of a particular modern analytical framework.
Which specific publications established the combined tests now described as anatomical convergence, modification–affordance alignment, orientation stability and patterned complexity?
Where were their operational definitions and statistical relationships demonstrated?
Wilson has earlier published work of his own, and his 2018 paper includes relevant methodological contributions and commentary from other researchers. Those are legitimate sources that need to be considered.
But citations should explain the development of the actual method, not simply establish that the general subject is old.
There is another relevant fact.
Wilson acknowledged reading my published research in January 2026, before delivering his June presentation.
That establishes familiarity, although it does not establish when he first developed the six criteria or prove that he adopted them from my work.
But where is he saying he had already developed something very similar to my work, and pointing to it? He doesn't, because he hadn't no doubt. Very suspicious isn't it?
Nevertheless, the methodological parallels and that documented familiarity make the question of acknowledgement reasonable.
If the framework was developed independently, its intellectual history should be traceable.
If my research influenced its later formulation, that contribution deserves recognition.
So to conclude, where, precisely, has Richard previously published this particular methodology? Not scattered observations about eyes, ears, flake scars or pareidolia, but the systematic combination of anatomical, mechanical and perceptual constraints he now presents as a formal framework. He has not identified an earlier publication establishing that complete method. Given his acknowledged familiarity with my research, and his insistence that my ideas offered nothing new, the absence of a clear explanation of his methodology's development is conspicuous, to say the least.
5. What Does "Iconic Affordance" Actually Add?
The test of a new scientific method is not the sophistication of its terminology.
It is whether the method produces better, more reproducible results.
Wilson's 2026 presentation proposes an analytical sequence beginning with pareidolia, proceeding through lithic organisation and iconic affordance, and ultimately requiring observer-level testing.
That may be a useful development.
But does it distinguish intentionally modified figurative stones from convincing natural mimics more successfully than the earlier approaches?
Does its scoring reliably separate stronger from weaker examples?
Can independent observers reproduce the assessments?
And does it demonstrate a meaningful cumulative effect when mechanical and anatomical criteria converge?
These questions require data.
The presentation does not provide completed validation establishing those outcomes.
Until then, iconic affordance remains a proposed evaluative framework, not a demonstrated statistical solution to the figure-stone problem.
Conclusion: New Terminology Is Not New Evidence
I have no objection to Richard Wilson improving his methods. I welcome serious attempts to investigate possible prehistoric imagery.
But the correspondence between his latest framework and the questions and methodologies I have publicly developed is considerable.
My own publications establish that I independently developed specific anatomical, topological, physical and probabilistic arguments before his 2018 Fontmaure study.
And his January 2026 email confirms that he had read my work.
The important question is how these lines of research relate to one another.
What is genuinely new in the 2026 framework? Which earlier publications supply its methods? What has been statistically validated? And what acknowledgement, if any, is due to contemporary research Wilson knew about?
I raised the issue directly. The explanation I received relied on historical authorities rather than a specific comparison of the modern methodologies.
That leaves the question unresolved.
There is an irony in demanding rigorous evidence for the origins of physical features while leaving the intellectual development of the interpretative method insufficiently explained.
I recognise that Wilson published on related subjects in 2010 and 2018. However, there is a significant distinction between discussing possible figure stones and developing targeted analytical methodologies and structured evidential tests intended to distinguish genuine artefacts and intentional figuration from natural coincidence and pareidolia. My published research demonstrates a sustained history of constructing precisely these kinds of proof structures, combining flint fracture mechanics, anatomical topology, patina logic, cumulative probability, Image Logic and Stacked Constraints. By contrast, I have not identified an equivalent, fully articulated and systematically applied methodology in Wilson's earlier published work. His 2026 framework represents a notable move towards the very approach I have been developing and publishing for years. Given his documented familiarity with that research, the absence of acknowledgement warrants a specific explanation, not merely references to earlier discussions of figure stones.
So, let me get this straight. Richard tells me my research offers nothing new because it was all done over a century ago, yet months later presents a strikingly similar methodology under the shiny new labels of “figurative constraint” and “iconic affordance”. Apparently, these ideas are century-old irrelevancies when I publish them, but worthy of a conference presentation when Richard does. Perhaps he could spare us the historical name-dropping and simply show us where this supposedly century-old methodology actually exists? Not the general ideas, Richard. The method.
This is a critical review of published methodologies, statistical arguments and documented correspondence. Similarity between approaches does not, by itself, prove plagiarism or intentional misattribution.
Sources and methodological comparisons
My published research
Publications examined in this review
Wilson, R. (2010). Cultural Cobbles or a Load of Cobblers?
Wilson, R. (2018). Eschewing Bear Tracks: Fallacies, Figure-Stones and Fontmaure.
Wilson, R. (2026). Bear-like Forms at Fontmaure? Testing Figurative Constraint in Neanderthal Lithics. Prehistoric Society conference, University of York.
References to Wilson's publications are included for scholarly identification and verification, not as endorsements of their conclusions.
