The study of the structural conditions under which living systems persist.
Two operations. Four regimes. One closure condition. Five constructive dimensions. The material changes. The geometry stays the same.
Persistence Dynamics is the study of the structural conditions under which living systems persist. It identifies two operations that every persisting system runs, the four regimes those operations produce, the closure condition under which a round of the cycle feeds the next, the recursion by which each cycle sits inside a larger one and contains smaller ones, and the five constructive dimensions by which a system can be read for what it has in place and what it is missing. The framework applies to any system that uses energy to maintain itself: a cell, an immune response, a company, a clinical trial, a career.
The work builds on three twentieth-century traditions that approached the same territory from different sides: Schrödinger's account of how living things hold their structure by feeding on order from the environment, Prigogine's mathematics of dissipative structures, and Maturana and Varela's biology of self-producing systems. None of these gave the internal geometry of the cycle that runs inside such a system. That geometry is what Persistence Dynamics names.
A living system holds, and it crosses. Holding is what gathers, contains, retains. Crossing is what releases, transmits, hands forward. These are the only two structural moves a system can make if it is going to both keep something and pass something on. A breath does both, in that order. A cell at its membrane does both. A team does both: option open, then commitment.
What turns these two operations into four regimes is that each operation can be in one of two states at any moment. Active, doing work right now. Or latent, present in the system but not at this moment doing work. Two operations with two states each gives four configurations, and each configuration is a regime. The math is trivial. What is less trivial is that the four regimes correspond to four distinct ways a system can be running, and that anything that persists has to pass through all four in a specific order.
Hold is what the system has accumulated: identity, lineage, memory, form already built. The substance of what holds is what arrived from earlier and survived. Cross is what the system is reaching toward: the meeting not yet happened. The substance of what crosses is oriented forward.
This reads across the four regimes. Potentiality holds the past at full strength while reaching toward the future at full strength. Encounter releases both, becoming pure present. Conservation rebuilds the past while the cross stays latent.
The four regimes sit on two dimensions that cross at the centre of the cycle. The dimensions are not the two operations, and not the four regimes. They are the two structural axes that the four regimes are arranged on, and they each span a different kind of thing.
The two dimensions cross at the centre of the cycle, perpendicular to each other. Every regime sits at the intersection of one transactional position and one generational position. The full structural identity of each regime is a pair: its place on space, and its place on time.
| Regime | Hold | Cross | Type |
|---|---|---|---|
| Potentiality | active | active | Capacitor |
| Construction | latent | active | Factory |
| Encounter | latent | latent | Reactor |
| Conservation | active | latent | Homeostat |
Each regime is a distinct kind of dynamical system. The type names on the right are the operational shorthand the framework uses to talk about what each regime does: a capacitor loads and discharges, a factory selects and assembles, a reactor runs parallel reactions, a homeostat maintains a setpoint while detecting drift. The four types are the four basic dynamical systems that fall out of the two-bit state-space, and each has its own observables, its own equations, and its own characteristic failure modes.
Potentiality is the loaded state in which both operations are at peak. Construction is the regime in which hold has surrendered and cross is doing all the work. Encounter is the moment when both operations go quiet, because what was built has met what it was built for. Conservation is the inverse of Construction: hold is doing the work, cross has gone latent, and what survived the encounter is being kept while the substrate for the next round is prepared.
The four are not stages of writing a draft. They are four different things a system can be doing, and a persisting system has to do all four to close one round. None can be skipped without the cycle breaking, and none is more important than the others, since each produces exactly the material the next one needs.
The four regimes run in one sequence, and the sequence is forced rather than chosen. Potentiality, then Construction, then Encounter, then Conservation, and back to Potentiality.
Two independent arguments converge on this order. The first is combinatoric. Each transition flips exactly one bit. Going from Potentiality to Construction, hold flips from active to latent while cross stays active. Going from Construction to Encounter, cross flips from active to latent while hold stays latent. Encounter to Conservation flips hold back to active. Conservation to Potentiality flips cross back to active. The result is the unique closed path through all four states on two bits where exactly one bit changes per step. Mathematicians call this a Gray code; there is only one closed Gray code on two bits, and it traces precisely this cycle.
The two-bit state space. Each cell is one regime; each arrow is one transition. Exactly one of the two operations flips state per step — the closed Gray code on two bits. The cycle traces the perimeter; no diagonal is allowed, because no transition flips both bits at once.
The second argument is substrate-based. Each regime produces what the next regime needs to consume. Potentiality's discrete release of pooled material is what Construction's production lines feed on. Construction's finished, licensed forms are what Encounter brings into contact with its target. The outcomes of Encounter are what Conservation stabilises and stores. Conservation's released material is what the next round of Potentiality begins to load. Either argument alone would not be enough; together they make the order overdetermined.
The transitions between regimes are not gradual. Each is a threshold, a moment where one regime's work commits and the next begins. There are four of them, one per regime boundary, and they are why the cycle is a cycle rather than a continuous slide.
A round is complete when what comes out of Conservation feeds back into Potentiality as the material for the next round. Closure is the structural condition under which a cycle gives back what it received and additionally produces what the next cycle will run on.
The cycle's geometry — the four regimes, the forced order, the closure condition — does not change when you move from a cell to a company to a career. The material changes; the geometry stays the same. That single observation is what makes Persistence Dynamics applicable across substrates, and it is also where the framework would fail most cleanly if it were going to fail. The φ-derived rate constants and the single-number measurement (γT = L · ln φ) that tells you whether a real system is close to the structural form are written out on the math page.
One full turn of the cycle. Sixteen positions in a ring, four per regime. Potentiality blue (top-left), Construction gold (top-right), Encounter red (bottom-right), Conservation russet (bottom-left). The next layer of structure inside each regime.
A closed cycle does not sit alone. When a cycle closes, it becomes one element of a larger cycle running at a slower rate above it; and looked at the other direction, every cycle contains smaller cycles running at faster rates inside it. Any axis of a cycle, looked at one level down, is itself a closed four-regime cycle.
Two consequences follow. Every persisting system is a stack. A cell sits inside an organ that sits inside an organism that sits inside an ecosystem. An immune response sits inside a body that sits inside a clinical course that sits inside a treatment programme. The stack is what persisting is. A system that does not sit inside something larger has nothing to hand its closure-residue forward to; a system that contains nothing has no substrate to load from at its next Potentiality.
And closure converts dynamical activity into accumulated substrate. The cell's complete cycle, while running, is the organ's substrate in motion. Once the cell's cycle closes, its residue is part of what the organ is made of. The same operation that closed the cell is what fed the organ its identity. This is why mature systems look so different from young ones: their substrate is the accumulated closure-residue of every cycle that ever ran inside them.
The recursion has no outermost level and no innermost level. A cycle's parent is itself a cycle inside its own parent; a cycle's components are themselves cycles whose components are cycles. The framework's predictions do not depend on finding a top or a bottom. They depend on the recursion being symmetric and scale-free, which is what the closure equation makes it.
Before a cycle can run as a coherent process, five things have to be available. Each one is built on the previous one. You cannot have the next without the prior.
Identity. There is something that coheres enough to be the subject of holding. Without it, hold has nothing to act on, and the cycle has no locus. A cell with a membrane. A team that knows who is in it. A manuscript with a working title.
Other. There is something beyond the self that the cycle can engage with. Without it, cross has nothing to reach toward, and the cycle has no exterior to meet. The cell has an environment. The team has a market. The manuscript has a reader.
Occurrence. Engagement actually happens. The hold and cross operations are not just configured — they are doing work, on a real substrate, in real time. Without occurrence, the structure of a cycle is available but no cycle is running.
Closure. A round of the cycle completes in such a way that what comes out of it becomes the substrate for the next round. Without closure, the cycle runs once and stops, because nothing it produced is reusable. Closure is what makes one round into the first round.
Recursion. The closed cycle is itself one element of a larger cycle, and it contains smaller cycles inside it. Without recursion, the closed cycle stands alone — it does not connect to scales above or below it, and the framework's predictions about cross-scale behaviour do not apply.
These five are not symmetric. They are constructive: each one rests on the prior. A system that lacks identity cannot have other, occurrence, closure, or recursion. A system that has identity and other but lacks occurrence has the structure of a cycle without the running of one. A system that runs but does not close has occurrence without completion — the structural signature of work that never compounds. A system that closes but does not recurse has internal completeness without cross-scale coupling — internally coherent, externally isolated.
The diagnostic logic that follows is: find the lowest unmet prerequisite, and address it first. Work at any higher level bounces if the substrate underneath it is unstable.
Schrödinger's What is Life? (1944) framed the puzzle: how does a system hold its structure when the universe around it runs toward disorder. His proposal was that a living thing feeds on order from its environment and releases disorder back. The structure is maintained through movement, not through stasis.
Prigogine made this rigorous twenty-five years later. He showed that certain physical structures, far from equilibrium, organise themselves spontaneously through energy dissipation. He called them dissipative systems. The hurricane, the Bénard cell, the candle flame, the metabolising organism. All exist only as long as energy and material keep flowing through them. The work earned him the Nobel Prize in 1977.
Maturana and Varela approached the same territory from biology, asking what specifically distinguishes a living system from a merely dissipative one. Their answer, autopoiesis, is that a living system continuously produces the components that produce it. The cell makes the membrane that makes the cell. The boundary between organism and environment is itself produced by the organism. Autopoiesis added to Prigogine's account the self-referential closure that biology requires.
What none of these traditions gave was the internal geometry of the cycle that runs inside such a system. They named the class of systems and the conditions under which the class is possible. They did not derive the structure of the cycle by which an individual member of the class actually persists, the sequence its regimes must run in, the way its closure produces the substrate the next round will load, the recursion by which one cycle's closure is another cycle's element, or the five constructive dimensions that make any of it referrable as a coherent process. That derivation is what Persistence Dynamics adds. The two operations, the four regimes, the closure condition, the fractal recursion, and the dimensional structure are not theoretical extensions of dissipative-systems theory or autopoiesis. They are the structural content of what those traditions described from the outside.
Schrödinger asked the question. Prigogine gave the mathematics of the class. Maturana and Varela gave the closure. None of them gave the cycle that runs inside such a system. Persistence Dynamics gives that cycle.
Many fields have built four-stage models from their own observations. Developmental biology. Immune response. Project lifecycle. Organisational change. They have circled the same shape from different starting points without a way to connect their findings. With two operations and their bit-states, the four regimes fall out by construction. The same four phases are now traceable to one source.
A clinician reading Conservation failure in a trial and an organisational designer reading Conservation failure in a company are diagnosing the same shape. Same geometry, different substrate. The diagnostic vocabulary carries from one domain to the next because the underlying geometry does.
For decades the literature on change and growth has run on one track, and the literature on regeneration and resilience on another. Innovation, transformation, scaling, disruption all sit on the first. Restoration, sustainability, repair, recovery sit on the second. They speak different languages and rarely cite each other. The four regimes give them shared words. Growth lives in Potentiality and Construction. Regeneration and resilience live in Conservation. Encounter is what both serve. The two camps were always describing the same cycle from different positions in it.
Domain-specific vocabularies have also kept entire fields from learning from each other. Oncology and organisational design. Immunology and team dynamics. Developmental biology and product development. Each discipline has its own terms, its own journals, its own conferences. Insights stay inside the field that produced them. With a shared geometry running under all of them, a finding about why immune Encounter fails in a cold tumour has the structural form of a finding about why outreach fails in a cold market: in both cases the other side has not loaded Potentiality, and no amount of construction can force a meeting that the receiver is not ready for. The hope is for the kind of cross-pollination Frans Johansson named the Medici effect: ideas that emerge at the intersections of fields and would not have appeared inside any one of them alone.
Prigogine gives the conditions for a dissipative structure to form. Maturana and Varela give the self-referential closure that distinguishes a living one. The internal kinematics of the cycle that runs between those two givens is what completes the picture. The three lineages were already pointing at one object.
Closure is also projection. One diameter of a closed cycle becomes an axis at the level above. The other stays at the cycle's own level as its internal radial state. The Pythagorean relationship between the carried and contained components holds across the projection. The recursion goes up by 1/φ per level. A persisting system is a stack of cycles, each one's closure feeding the level above as substrate.
The projection is partner-dependent. A closed cycle cannot choose its own up-axis. The partner cycle that crosses it picks which diameter propagates upward. One cycle alone cannot climb the recursion. The climb happens between cycles, at the moment they meet.
Substrate-independence is treated here as a falsifiable bet on the geometry, not a hope that the pattern recurs. The closure equation does not depend on what is running through it. A persisting system whose geometry diverges from this one disproves the account.
Reading systems through the four regimes deepens with use. The first system read is diagnostic in itself. The second adds resolution. By the time the reader has read a cell, a trial, a relationship, and an institution through the same geometry, the shape of each one sharpens the shape of every other.
Persistence Dynamics is not a finished account. The geometry holds across the cases checked so far, the open seams are real, and the framework's predictions in unfamiliar territory have not yet been tested. The work continues, and the way it continues is through application.
Encounter is the research practice where that work happens. The first substrate under active study is immuno-oncology. Cancer cells run a cycle. Immune cells run a cycle. The drug that is supposed to bridge them is itself a Construction output that has to land in an Encounter regime, and trial protocols can be read for which regime they assume is already loaded and which they treat as already operating. The structural readings live as published predictions in the Living Scorecard, which records what the framework forecasts ahead of trial readouts and where those forecasts succeed or fail.
Encounter works across other domains as the framework asks for it. Some of these are biological: female health, evolutionary dynamics, cellular processes that do not fit cleanly into the oncology frame. Some are organisational: change programmes, leadership transitions, structural diagnoses of teams and institutions. Each domain stresses the geometry in a different direction. When the geometry holds, a new substrate joins the framework's working corpus. When it breaks, a new structural question opens for the framework itself.
This is the loop that develops Persistence Dynamics over time. Application surfaces what is missing in the theory. The theory then sharpens, which lets the next application reach further. The framework matures through the work that uses it.
Cite as: Persistence Dynamics (van der Klein, 2026), the study of the structural conditions under which living systems persist.
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