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The Penteract Methodology

Our method in plain terms

A legal case is never simply: “apply the rule = solution.” It is often more complex: several countries, different branches of law, conflicting interests, or even a system that breaks down. That is why, at Peeters Law, we work with a method we have called the Penteract: we look at every case through five angles, plus one additional angle.

This method may seem complex at first sight to those unfamiliar with it, but in our practice it is an effective way to analyse issues clearly, systematically, and fairly, without overlooking anything or anyone. It is our compass.

Five angles + one additional angle to examine a case, meaning:

1. Territorial dimension (jurisdiction & conflict of laws). In plain terms: Where does it take place? Which court has jurisdiction, which law applies, and can a foreign judgment be recognised. Legal denomination: territorial dimension — international jurisdiction, conflict of laws (applicable law), recognition and enforcement.


2. Material dimension (fields of law). In plain terms: What is it about? Contracts, property, liability, family, inheritance, company law… or a combination. Legal denomination: material dimension — horizontal structuring by field (contracts, liability, lease, succession, company law, …) and vertical layering (national, EU, international, soft law).


3. Linguistic & legal-cultural dimension (language & context). In plain terms: Which words, in which context? Meaning arises through language, embedded in tradition and practice. A clause may carry a different weight depending on language or culture. Legal denomination: linguistic and legal-cultural dimension — semantics, translation, pragmatics, comparative law, contextual interpretation.


4. Normative dimension (foundation of principles and sources). In plain terms: What do specialised jurists and courts say? Their insights, decisions, and principles set direction and limits. Legal denomination: normative foundation — fundamental rights, general principles, jurisprudence (CJEU, ECtHR, Constitutional Court, higher courts), doctrine and soft law.


5. Strategic dimension (strategy, approach & perspective). In plain terms: Which course do we take? Litigate or negotiate, accelerate or postpone, act discreetly or visibly. Always with a broad view: how does this case fit into the wider framework? Legal denomination: strategic dimension — strategic choices (litigation, mediation, advice), approaches (anticipatory, curative, mediating), wide-angle perspective (institutional and societal).


6. Heyvaertian dimension (the fracture line). In plain terms: Where does it break down? Sometimes the law itself falls short. Then correction must be sought at a higher level: Constitutional Court, European courts, or human rights bodies. Legal denomination: Heyvaertian singularity — structural deficiency in law, visible in preliminary references, constitutional review, or reliance on higher norms. Inspired by the dissection method of Professor Alfons Heyvaert, this dimension is a distinctive feature of our methodology.



Why is this method so important? Clarity: you know exactly where you stand. Safety: you avoid costly mistakes and penalties. Trust: you feel that everything has been considered, not only the “letter of the law.” Honesty: we also acknowledge the limits of law.

The Penteract is therefore a practical compass that helps us examine every case from all angles — so that nothing and no one is left out of sight.



Penteract Methodology


Legal reasoning requires far more than the mechanical application of rules.
It demands an architecture, internal relations, a supporting framework.
It presupposes logical coherence, an intelligible form.
It calls for an attentive gaze, an open perspective.
And it is rooted in meaning and context.

Just as a mathematical theorem is only understood through its internal relations,
and a sentence only fully reveals itself through its structure — and its silences —,
so a legal case cannot be reduced to a mere sum of rules:
it requires a readable structure, deliberate reasoning, interpreted context, and a comprehensive view.


Step 1 — Not stopping at “applying the right law”

It seems simple: know the rule, apply it.
But legal thinking requires more. One must be able to:

  • order the subject matter (as in higher geometry),
  • build valid arguments (as in logic),
  • choose the right angle (as in optics),
  • read the text — and what it leaves unsaid (as in linguistics).

Just as a mathematical proof holds only through internal coherence,
a legal argument cannot rest on mere norm-stacking:
it requires structure, coherence, interpretation, and perspective.
To think legally is to construct an architecture — and to recognize the moment it begins to crack.


The Penteract Model — Thinking in five + one dimensions

The penteract is a methodological framework for conceiving law in its layeredness and complexity.
It distinguishes six analytical dimensions which together map the legal landscape (not sequentially, but as a coordinate system):

  1. Language & Legal Culture — meaning arises in language, shaped by tradition and practice.
  2. Context & Factual Framework — facts are narrated observations; they also expose power relations.
  3. Applicable Legal Sphere — territory and jurisdiction (who decides? which law governs?).
  4. Substantive Fields of Law — structuring by domain (contract, property, liability, family, …).
  5. Normative Foundations — principles, fundamental rights, hierarchy of sources, doctrine and soft law.
  6. The Heyvaertian Breachline — the critical point where the system protects itself at the expense of justice, and the jurist must interrupt the reasoning.


Not an algorithm, but an analytical compass

The penteract is not a recipe and not a checklist.
It is a commitment to clarity of thought, a method of precision — an internal tool to order multiplicity without flattening it.


Thinking beyond 3D — the wide-angle perspective

Human perception is bounded; legal configurations are not.
Just as a wide-angle lens reveals hidden relations and accepts distortion in order to preserve the whole, the penteract expands the view:

  • from rule to counterforce,
  • from clause to legal culture,
  • from outcome to interpretive frame.
    Without perspective, no accuracy; without shifting the gaze, no meaning.


Why a structured model is essential

Law is not a mosaic of isolated rules but a fabric of meanings, competences, and hierarchies, spanning national, European, and international layers.
In such a landscape, linear syllogism collapses; what is needed is a mental architecture that reveals structure and marks limits.


Inspiration — Walter van Gerven

In a layered polity, national and supranational sources intertwine.
Legal certainty must never harden into rigidity: the more complex the context, the greater the need for open norms, structured interpretation, and proportionality.
The penteract gives this vision practical form: five dimensions + one, with constant attention to semantics, context, and proportionality.


Multidisciplinarity as a structural principle

Legal reasoning stands in dialogue with:

  • Linguistics (semantics, pragmatics, grammar),
  • Political and economic context (the creation and operation of norms),
  • Comparative law (challenging what seems self-evident),
  • Normative theory (keeping alive the question of justice).
    Our arguments are therefore substantively sound, contextually lucid, and methodologically grounded.


Why mathematics, logic, optics and linguistics?

Because structure, validity, perspective, and meaning are the cornerstones of legal analysis.
Questions that then sharpen include:

  • Is “reasonable” binding or merely indicative in this clause?
  • What separates a threat from a promise?
  • Why does one jurisdiction read a text differently from another?


Example — the freelance platform case

A European collective challenges a “reasonably necessary” clause in English-language terms governed by English law.
The penteract guides the analysis:

  • Geometric: layer by layer (jurisdiction, applicable law, market dynamics, principles),
  • Logical: consistent chains of reasoning from the facts,
  • Optical: perspectives of user, judge, and regulator,
  • Linguistic: the meaning of “reasonably” in contractual English, Belgian law, EU consumer law, and the idiom of digital platforms.
    The wide-angle approach reveals hidden forces and activates the proper legal framework.


Methodological integrity

The penteract makes law visible, coherent, and responsible, precisely where context is most resistant — and knows how to step back when law reaches its limit.
Where further reasoning would distort reality, the model marks the boundary and opens the question.


The Strategic Dimension — Strategy, Angle & Perspective


Strategy

Strategy asks: how do we position this case in time and within the field of forces?
Choices are never purely technical; they occur in an institutional and social context.
Examples:

  • litigate or abstain,
  • negotiate or defer,
  • discretion or visibility,
  • accelerate or slow down.


Angle

A concrete mode within the strategic dimension:

  • Anticipatory (advice, structuring, risk analysis),
  • Mediatory (negotiation, settlement),
  • Curative (defense, procedure, damage limitation).
    Strategy is the trajectory; the angle is the orientation.


Wide-angle perspective

No case is isolated from language, culture, power relations, or normative structures.
A broad, deliberate gaze prevents a detail from being torn out of context.


Mandate and ethics

We commit to careful legal engagement — without guaranteeing results.
Every mandate is clearly defined and may end if circumstances change, ethical concerns arise, or trust is lost, with proper handover of the file.


The Territorial Dimension — Jurisdiction & Private International Law


Three core questions

  1. Which court is competent? (international jurisdiction)
  2. Which law applies? (conflict of laws)
  3. Will a foreign judgment be recognised/enforced? (recognition & exequatur)


A coordinating layer above substantive law

Private international law (PIL) coordinates forum, applicable law, and cross-border effects.


Sources

  • National conflict rules (e.g. Belgian Code of PIL),
  • EU regulations (Brussels I bis, Rome I, Rome II, Succession Regulation 650/2012, Matrimonial Property Regulation 2016/1103),
  • International treaties (e.g. Lugano Convention, Hague Conference instruments),
  • Practical cooperation with foreign counsel.


Practical reach

Without jurisdiction or proper conflicts analysis, even the most solid argument has no effect.
Rules of competence concern not only procedure but also access to justice, language, and position within interwoven legal orders.


Reflective note

Jurisdictional rules are not mere technicalities but nodes where legitimacy, access, and equality intersect.
This is where breachlines can appear.


The Substantive Dimension — Fields of Law


Framework and function

It identifies the substantive law applicable and ensures precision in specialised structures.
We distinguish:

  • Horizontally by domain (contracts, liability, succession, …),
  • Vertically by level of norm (national, EU, international, soft law).


Practical complexity

What looks like “a tenancy” often requires: BE/ES coordination, EU instruments, translation of clauses, and review against fundamental rights.


Scope of intervention

Focus: cross-border, multilingual, layered cases.
We intervene where we have demonstrable expertise, under a limited mandate, respecting ethical and insurable boundaries.


Modes of work

In-house (full responsibility):
contract law · liability law · labour law/self-employed status · PIL · consumer protection & market practices · tenancy & real estate (BE/ES) · succession & estate planning (EU) · company & association law (BE) · legal translation & multilingual contracts · language & jurisdiction clauses · property division, usufruct, superficies (BE/ES) · structuring family wealth across legal systems.

With partners (specialists):
GDPR · tax law · public procurement/subsidies · social criminal law/cybercrime · competition/distribution · spatial planning (BE/ES) · posting/A1 · disciplinary law for regulated professions.

Referral:
criminal law (violence/sexual offences/drugs) · asylum & migration · medical liability outside insurance · notarial deeds & successions · enforcement/foreclosure · family law without cross-border element · cases without legal basis or beyond capacity.

Last updated: 25 September 2025. Overview indicative; each file subject to conflict check and mandate.


Language & Legal Culture — The First 

Dimension

Language is a full legal factor: it determines meaning, validity, interpretation.
Our method:

  • compare terms with authentic source versions,
  • ensure legally and contextually correct translations,
  • safeguard semantic and comparative consistency,
  • where necessary, consult legally trained native speakers, while retaining final responsibility.
    This corresponds to the lawyer’s obligation of means: careful, legally reasoned analysis in context.


The Normative Foundation — 

The Fifth Dimension

We anchor every position within:

  • Control framework: fundamental rights, general principles, jurisprudence (CJEU, ECtHR, highest national courts),
  • Interpretive framework: soft law, doctrine, multilayered interpretation, comparative law,
  • Strategic framework: positioning vis-à-vis other systems and alternative routes.
    Goal: to render open norms (e.g. reasonableness, privacy) legally testable within a plural legal order.


Breachline — The Heyvaertian Dimension

Every model is a projection; every projection has its limit.
The Heyvaertian breachline marks the point where law, even when properly applied, exposes a void: where the normative structure produces exclusion it cannot correct, where the system protects itself at the expense of justice.
At this point, the jurist interrupts the reasoning — by preliminary reference, constitutional review, or appeal to higher norms — not out of weakness but methodological integrity.
This breach bears the name of Professor Alfons Heyvaert (1936–2024), who dissected law to its bone-structure and exposed what institutions conceal: law is no given nature, but an ordering construction — with choices and consequences. His dissective stance underpins this model: precision as method, doubt as discipline.


Legal Disclaimer

The content of this page describes the internal methodological approach of Peeters Law. It constitutes neither an offer within the meaning of Art. 5.57 Belgian Civil Code, nor personalised legal advice.
No (pre)contractual obligation arises from this publication; the theory of legitimate expectations (Art. 5.22) does not apply to expressly non-binding public communication.
A valid agreement with Peeters Law arises only through a clear, unequivocal written confirmation (physical or digital). A unilateral email, conduct, or preliminary invoice does not amount to acceptance without formal mandate.
Peeters Law disclaims any (pre)contractual liability based on this text, except in cases of proven fraud or gross negligence.

POINT OF RUPTURE

The Heyvaertian Singularity: The Projection That Fails


In higher geometry, a penteract is a five-dimensional hypercube.

It cannot be drawn — only projected into three dimensions.

Each projection is necessarily a simplification. A distortion.

And sometimes, within such a projection, a point of rupture appears:

a singularity, an asymmetry, a zone where internal tension becomes so intense

that the coherence of the whole collapses.

This is not a mathematical error.

It is a structural limit of the system.

The Penteract legal model functions analogously:

it is a structured projection of how we think law —

through layers of language, context, legal order, subject matter, and normative grounding.

But even this model encounters its fault line —

a place where it stops working,

where dissection no longer illuminates but disintegrates,

where the model itself begins to come undone.

This rupture point, we call the Heyvaertian singularity.

The Penteract was designed as a methodological framework,

crafted to accompany legal reasoning with maximum precision

and constant structural awareness.

By analysing each case across five interconnected dimensions —

language and semantics, normative context, competent legal order, applicable substantive law, and underlying principles —

the model offers a controlled projection of legal reality.

It functions as an instrument of internal verification,

preventing systemic reasoning errors

and exposing the blind spots of legal analysis.

But every analytical model presupposes a degree of formal closure.

And it is precisely when applied with utmost rigour

that its own limit becomes visible.

When a case, despite being properly structured across all five dimensions,

still clashes against a fundamental friction, an asymmetry, or a moral dissonance —

it is not the model that fails.

It is law itself that reveals a breach.

The Heyvaertian singularity names precisely this:

a point of projection where the legal framework collapses,

undoes itself,

or becomes structurally inadequate.

This is not a moment that calls for ever finer interpretation.

It demands a systemic interruption:

– through a preliminary reference,

– a constitutional appeal,

– or a silent gesture —

an analytical breath,

where logic ends and conscience begins.

In this sense, the singularity is not a flaw.

It is the necessary threshold of any intellectually honest legal method.

It is not a sixth dimension proper.

It is the rupture within the projection of five —

language, context, legal order, substantive matter, normative foundation.

For any model that claims totality must inevitably meet its own frontier.

As in higher geometry, there comes a moment when structure fractures,

projection fails,

and a singularity appears —

a space where the system loses its internal coherence.

This fracture — the Heyvaertian singularity — arises when:

– the normative structure produces an exclusion it cannot repair,

– law protects itself at the cost of justice,

– none of the five dimensions can expose the injustice without diminishing or masking it,

– the lawyer can no longer argue within the system,

but must call the system itself into question:

suspend it, confront it, strip it bare.

At that point, the model must be left behind —

not out of weakness,

but out of necessity.

This singularity is not an enrichment.

It is a reminder —

that every model has its limits.

And that to think law means knowing when to lay the analytical tool aside,

in order to hear what the structure can no longer express.

It is the moment when the legal thinker —

rather than extending the reasoning —

submits a preliminary question,

invokes a constitutional deficit,

or — quite simply — interrupts the law.

As Professor Fons Heyvaert taught:

Dissect. And if you find nothing, ask why the system is built this way.

Why does this singularity bear his name?

Because Alfons Heyvaert — more than anyone — stripped legal thinking to its bare structure,

and stopped there,

to show what law does not say.

Not as theory.

As method.

Not out of ethics.

Out of dissection.

Never to embellish what had to be seen as it was.

Foucault thought power.

Kennedy politicised law.

But Heyvaert was a jurist.

A lawyer. A teacher.

He dissected, exposed — and left it exposed.

His bibliography speaks for itself:

dissected and denuded —

without reconstruction, without compromise.

This dimension bears his name not as homage,

but as structural reminder:

that law must be questioned in its claim to normativity.

And the one who never asks that question…

takes the system too seriously.

The Penteract model was conceived by Peeters Law as a thinking tool:

a structure for analysing law in its linguistic, normative, contextual, material, and strategic dimensions.

It does not claim to speak truth.

It offers a compass —

for strategic thought,

for legal conscience.

But this model itself — like the law it reflects —

must remain open to doubt.

Because every structure also conceals.

Every structure excludes.

Heyvaert reminded us that legal thought does not end in analysis —

it begins in the discomfort it reveals.

That is why the Penteract remains useful only as long as it continues to question.

The moment it becomes self-evident, it must be dismantled.

Just as Heyvaert stripped legal institutions to the bone,

the model too must, at its hour, be undone —

not to deny what it offers,

but to make space for what it leaves out.

A model that does not interrupt itself becomes doctrine.

And then, it ceases to be a tool of thought.

It becomes part of the problem.

Sometimes, we do not learn by receiving an answer —

but by being disturbed.

Not by repetition —

but by dissection.

In law —

where routines harden into rules,

and rules are mistaken for truths —

this kind of thinking is rare.

But irreplaceable.

To think this way begins with one question:

What is law, really?

It is not a neutral system.

It is not an objective technique.

It is a language.

A structure of exclusion, protection, and hierarchy.

An architecture of social relations presented as principles.

Constellations of power disguised as norms.

Marriage, in this light, is not a romantic institution —

but a distribution of rights, duties, and social security.

Nationality, not an identity —

but a legal filter.

Family law, not a shelter for autonomy —

but the organisation of inequality.

And the legal subject?

Not a free individual,

but a position within a system that decides

who counts,

who is heard,

and who is granted access to rights.

> “A relationship is often not personal, but economic —

a relation between estates far more than between persons.”

(Liber Amicorum Heyvaert, 2002)

To think in this way

is not to collapse into doctrine.

It is to take a stance.

Against lawyers who see law

as a system of order and rules,

rather than an instrument of social reproduction.

Against the notion that marriage is a bond of love,

without naming its insurance logic.

Against the illusion that nationality is primarily cultural or political,

rather than a legal entry ticket to rights and protection.

This way of thinking does not reject law —

it passes through it.

And it asks:

Why is it so?

Who benefits?

What alternatives could be imagined?

It is not guided by the rule,

but by the fracture.

Not by doctrine,

but by resistance.

And anyone who has faced it knows:

it is uncomfortable.

It is slow.

It is exact.

> “His lectures were not for those who wanted to build.

They were for those who wanted to dismantle —

to see how things (re)take place.”

(Liber Amicorum Heyvaert, 2002)

In our legal practice, this approach resonates —

with care, without mimicry.

But in every case analysis, every legal translation, every normative tension,

we feel:

Law is not self-evident.

It calls for dissection.

And for ethical awareness of what that dissection reveals.

In analysing a cross-border cohabitation contract,

the distinction between legal fiction and lived dependency became unavoidable.

The contract presumed equality.

But to any gaze trained by Heyvaert’s method,

inequality had been normalised —

in the division of care, labour, property, and futures.

In such cases, his method taught us —

those of us fortunate enough to encounter his thought —

that law must be analysed not only through applicable norms,

but through invisible dynamics and social asymmetries.

> “The only truly free personal relationships

are those that law does not recognise.”

(Het personen- en familierecht ont(k)leed — Personal and Family Law De(con)structed)

This is not a conclusion.

It is a point of departure.

It invites us to reread,

to pose the questions we prefer to avoid,

to seek clarity without falling into ideology.

This radical yet analytical attitude

is what made Heyvaert a master to many —

a singular voice in legal thought.

Alfons Heyvaert (1936–2024)

Professor. Lawyer. Thinker. Teacher.

He was not the one who taught us what we know.

He was the one who taught us where to begin:

with the question.

With resistance to the obvious.

With the dissection of law.

Disclaimer – Legal Notice Peeters Law

The content of this page is a general methodological presentation of the internal approach of Peeters Law.

It shall not be interpreted as an offer within the meaning of Article 5.57 of the Belgian Civil Code,

nor as personalised legal advice.

This text does not constitute a declaration of intent to conclude a contract (Article 5.20 C. civ.),

nor an invitation to negotiate as defined in Article 5.15, §2 C. civ..

No contractual or pre-contractual obligation may arise from the publication, consultation, or interpretation of this material.

The theory of legitimate expectations (Article 5.22 C. civ.) does not apply,

insofar as no reasonable reliance can be based on a public communication that is explicitly characterised as non-binding.

A valid agreement with Peeters Law may only arise through a written, clear, and unequivocal expression of will,

confirmed in physical or digital form.

Unilateral communications by email, implicit conduct, or prior invoicing may never be construed as acceptance

or as the establishment of a mandate without a formal agreement.

Peeters Law expressly disclaims any contractual or pre-contractual liability arising from this publication,

except in cases of fraud or proven gross negligence.

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