Cosmoxenia · Case Studies

The Framework › VI. The Ontological Onus › Case Study I

Artificial Symbiogenesis

Case Study — The Cosmoxenia Toolkit in Practice

About this page

This page applies the Cosmoxenia Toolkit Levers described in Section VI of the framework to a specific, scientifically grounded scenario — the proposed conversion of the New World screwworm fly from an obligate parasite into a mutualist via a modification gene drive. It is the first in a series of case studies. Each case study occupies its own page and can be read independently; together they form an applied companion to the framework.

I. The Alternative to Extinction·II. How a Mutualist Screwworm Drive Would Work·III. The Resulting Systemic Loop·IV. Real-World Scientific Precedents·V. Axioms Satisfied·VI. The Relational Matrix — For the Deeper Reader

I

The Alternative to Extinction

Science is already developing extinction drives — suppression gene drives designed to delete a species outright. This is a Guest-posture solution: it applies Lever 1 (the Fractal Shift) to drop to the genetic layer, but its goal is erasure rather than integration. When the target is a hyper-extractive node embedded in the planetary biosphere, permanent deletion risks triggering cascading systemic collapse. The framework's deeper logic points toward a Host-posture alternative: Modification Drives . Rather than deleting the node, a modification drive deploys both Lever 1 (dropping to the genetic layer) and Lever 2 (Structural Role Fluidity) simultaneously — permanently rewriting the Guest's behavioral instructions to convert it from a defecting parasite into a paying mutualist. (Aldo Leopold's famous dictum: "The first law of intelligent tinkering is to save all the parts." )

A critical clarification before proceeding: the screwworm remains a Guest throughout this transformation — before and after the modification drive. It is disposed toward narrower relation-perception both as a parasite and as a mutualist. What changes is not its role in the Host-Guest hierarchy, but the type of Guest it is — specifically, how it deploys its narrow relation-perception. A parasite deploys that narrowness in ways that are only of utility to itself, actively harming the Host. A mutualist deploys the same narrowness in ways that serve both itself and the Host. This distinction matters for understanding what Lever 2 is doing here: it is not swapping roles between individuals, but shifting the quality of guesthood itself. No Guest is permanently in a win-lose relationship with its Host.

A gene drive can theoretically be designed to alter an organism's behavior or biochemistry to convert it from a parasite into a mutualist — a process called artificial symbiogenesis . Instead of an extinction drive that deletes a node from the ecosystem, a modification gene drive rewrites the genetic instructions to alter how the Guest interacts with the Host matrix.

Real-world programs already in motion. DARPA's GUARDIAN program and Uruguay's National Institute of Agricultural Research (INIA) are already developing suppression gene drives targeting the screwworm. The modification drive proposed here is not a rejection of that work — it is the deeper question it raises: once we have the power to rewrite a species' genetic instructions entirely, why default to deletion when integration is architecturally possible?

II

How a Mutualist Screwworm Drive Would Work

To shift the screwworm ( Cochliomyia hominivorax ) from an obligate parasite into a mutualist, a gene drive would need to edit two primary sets of genetic instructions:

The Host's Responsibility — A Decision Space

There is a hidden assumption running through this case study that is worth making explicit. The framework's hospitality logic does not merely describe the Host-Guest relationship — it implies that the Host posture carries an active responsibility. The Host's broader relation-perception is precisely what equips it to entrain, shape, or redirect the Guest's narrower orientation. The question is never simply whether to intervene, but how .

When facing a hyper-extractive Guest such as the screwworm, the Host posture has at least three distinct strategies available — each representing a different trajectory through the relational matrix:

Strategy 1 — Extinction Drive. Eliminate the Guest node entirely. This is the option least cognizant of the adjacent possible — those other forms of symbiosis available within the matrix. It forecloses every cell except absence, and treats the relationship as inherently irredeemable. DARPA's GUARDIAN program and Uruguay's INIA are currently pursuing this path.

Strategy 2 — Guest-Side Modification Drive. Alter the Guest's lower-level physiology to produce higher-level behavioral change. This is what this case study proposes. It navigates toward mutualism by rewriting the Guest's genetic instructions — moving across the matrix rather than exiting it.

Strategy 3 — Host-Side Modification. Strengthen or retrain the Host's own defenses — immune responses, recognition systems, structural resistances — and allow selectionist dynamics to resolve the relationship over time. This is how evolutionary arms races classically proceed: the Host evolves, and the Guest either adapts into a less harmful posture or is gradually excluded. The complication here is that the screwworm infests multiple host species simultaneously, making a coordinated host-side response more complex. Nevertheless, this strategy has the advantage of working with existing evolutionary dynamics rather than overriding them.

What distinguishes our contemporary situation is that all three strategies — previously available only through relatively slower natural selection — can now be induced artificially. Artificial symbiogenesis informed by cultural evolution is the deliberate, intentional acceleration of what evolutionary transitions have always done: restructure the relational field between organisms. The modification drive is not a departure from nature's logic; it is that logic made conscious and directed.

A. The Behavioral Edit — Dietary Shift

☷ Lever 1 in practice. The drive alters the larvae's enzyme production. Instead of consuming living, healthy flesh, the larvae are genetically re-wired to act strictly as detritivores. They would only eat dead, necrotic tissue — mimicking the beneficial behavior of common blowfly maggots used in medical maggot therapy.

B. The Value-Add Edit — The Mutualist Pivot

☰ Lever 2 in practice — a note on what "role fluidity" means here. The larvae are engineered to secrete therapeutic payloads directly into the animal's wound. As they clean the dead tissue, they release localized antibiotics, anti-inflammatories, and rapid-healing growth factors.

It is worth being precise about what Lever 2 is doing in this case. The framework states that posture is dictated by structural context and that "no entity is permanently a Guest or a Host." This encompasses two distinct phenomena:

Interpretation 1 — The Guest posture shifts (this case study). The Host and Guest roles remain with the same species, but because the Guest shifts how it deploys its narrow relation-perception — from pure self-extraction to mutual benefit — the entire dynamic of the relationship changes. The screwworm remains a Guest before and after; only the type of Guest it is changes. This is the more common pattern in nature, and it is the one Lever 2 enacts here.

Interpretation 2 — Host and Guest postures invert (a future case study). More radically, the roles themselves swap between the same individuals. This is rarer, more context-dependent, and almost always tied to developmental stage or social convention rather than physiology — as when an adult child becomes the primary caregiver to an aging parent. A separate case study will explore this second interpretation in depth.

Guest-Posture Solution — Extinction Drive

Defecting Guest

↓

Delete from ecosystem

↓

Node gone. No surplus.

Host-Posture Solution — Modification Drive

Defecting Guest

↓

Lever 1:
Drop to genetic layer

Lever 2:
Rewrite structural role

↓

Paying Guest + Relational Surplus

Visual summary — the four levers in action

The four panels below summarise what the preceding two sections describe in prose: the transformation arc from parasite to mutualist, the two toolkit levers that enable it, the resulting biological loop, and the before/after node comparison.

III

The Resulting Systemic Loop

Under this design, a wild female fly would still lay eggs in an animal's wound. However, instead of a fatal infestation, the Host animal receives an automated, bio-engineered medical treatment. The wound is cleaned, sterilized, and healed. The former-parasite Guest pays its "systemic rent" in real-time, and the value it generates — clean tissue, neutralized infection, accelerated recovery — is something neither party could produce alone.

This is the Relational Surplus in biological form. What was a zero-sum dynamic — one party's gain entirely at the other's expense — becomes a win-win encounter in which both Host and Guest benefit, and something genuinely new comes into existence between them.

It is worth noting that mutualism is not the only improvement available over parasitism. The framework's relational vocabulary maps directly onto the full spectrum of possible Guest −Host relationships — what biology calls the types of symbiosis . Any movement along this spectrum that is incrementally closer to a win-win scenario represents a genuine improvement, even if it stops short of full mutualism:

Mutualism (Host + / Guest +)

Both parties benefit. Relational Surplus is generated — the Emergent Third Thing. The goal of the modification drive.

Host Commensalism (Host + / Guest 0)

Host benefits from Guest's presence; Guest is indifferent. Paradoxical and evolutionarily unstable.

Inverse Parasitism (Host + / Guest −)

Host benefits despite Guest actively harming itself. Rare; no established biological name.

Commensalism (Host 0 / Guest +)

Guest benefits; Host is unaffected. The Guest's self-interest passes through the Host field without registering.

Neutralism (Host 0 / Guest 0)

Neither party is significantly affected. Pure coexistence; an improvement over harm, but no surplus generated.

Guest Amensalism (Host 0 / Guest −)

Host inadvertently harmed; Guest is neutral. Closer to careless ecological crowding-out than intentional harm.

Parasitism (Host − / Guest +)

Guest benefits at direct expense of Host. The screwworm's current relationship. Note: parasitism can have ecological value in certain contexts — it is not inherently a failure mode.

Host Amensalism (Host − / Guest 0)

Host is harmed; Guest is unaffected. The Guest's presence degrades the Host field without intent.

Synnecrosis (Host − / Guest −)

Both degraded. The Guest's relation-perception has contracted to the point of destroying its own substrate — an evolutionary failure mode. At the civilizational scale, this describes extractive economies consuming their own biosphere.

IV

Real-World Scientific Precedents

While an engineered mutualist fly is highly futuristic, nature and synthetic biology already use this blueprint:

A. The Wolbachia Shift

The Wolbachia bacterium naturally oscillates between a reproductive parasite and a necessary nutritional mutualist depending on its host's evolutionary needs — a natural demonstration that the same organism can occupy entirely different relational postures depending on structural context.

B. Paratransgenesis

Scientists use symbiotic bacteria inside disease-carrying insects to express molecules that neutralize pathogens, curing the vector rather than eradicating it. The structural context of the Guest is altered; the Guest's own biology does the work.

C. The Eukaryotic Precedent

The framework's foundational biological pillar already provides the deepest precedent: the mitochondrion. A predatory bacterial Guest whose structural context was altered until it transformed into a protective, energy-producing organelle — the defining event of complex life. Artificial symbiogenesis applies the same logic at the genetic layer, with deliberate intent.

V

Axioms Satisfied

This approach satisfies both Axiom 3 (the Relational Surplus and the Emergent Third Thing) and Axiom 5 (the Teleological Vector). The crucial point is that the value generated — wound cleaning, sterilization, and accelerated healing — belongs to neither the Host animal nor the former-parasite Guest alone. It is irreducible to either party.

Axiom 3

This is the Emergent Third Thing : a biomedical service that springs into existence only from the encounter itself. By altering the structural context of the Guest (Lever 2), the "bad actor" is not eliminated but upgraded — paying its systemic rent in real-time and generating a Relational Surplus where both the Host matrix and the former Guest co-evolve.

Axiom 5

It honors the Guest's localized agency while upgrading its relation-perception — the very definition of Axial Elevation . The former zero-sum dynamic is not suppressed but structurally elevated into a win-win encounter, fulfilling the teleological vector of cosmic hospitality.

VI

The Relational Matrix — For the Deeper Reader

Let's return to the symbiosis matrix in Section III. This is a 3×3 matrix whose axes are the Host's outcome and the Guest's outcome. Each cell can be described in terms of McGilchrist's hemisphere hypothesis as reinterpreted through the hospitality framework: the Guest's narrow relation-perception may resonate with the Host's broad field-care (producing surplus), drift into indifference toward it (producing neutrality), or actively conflict with it (producing harm). Crucially, the Guest is always the party whose orientation determines the dynamic — because the Host's broad relation-perception, by definition, cannot shift as dramatically or as quickly.

The 3×3 Relational Matrix

The Three Unnamed Configurations

Three cells in the matrix lack standard biological names, because evolution tends to select them out quickly — they represent configurations so unstable that they rarely persist. Yet they are theoretically significant:

Host +/Guest − (Inverse Parasitism). The Host benefits despite the Guest actively harming itself within the relationship. There is no established biological term for this. It may occur transiently when a host organism's immune response converts a pathogen's self-destructive behaviour into a net benefit — for example, a dying parasite releasing compounds the host metabolises as nutrients. From a McGilchrist perspective, this is a Guest whose relation-perception has inverted against itself while the Host's broad field-awareness harvests the result.

Host +/Guest 0 (Host Commensalism). The Host benefits from the Guest's neutral presence. This might occur when a commensal organism's mere existence — its mass, its chemistry, its position — provides structural value to the Host field without the Guest "intending" any benefit. The Guest's relation-perception is simply not oriented toward the Host at all; it passes through the relationship like light through glass.

Host 0/Guest − (Guest Amensalism). The Guest harms or diminishes itself within a Host field that remains indifferent. This may describe organisms that produce toxins lethal to themselves in environments that simply absorb and neutralise those toxins. The Guest's narrow relation-perception has turned against itself without the Host registering the event.

Applying the Matrix to the Screwworm

The screwworm currently occupies the Host −/Guest + cell — classical parasitism. The modification drive navigates the Guest's relation-perception along the matrix, and any movement away from that top-right cell that is incrementally closer to a win-win scenario represents a genuine improvement. A drive that produces commensalism (Host 0/Guest +) would still be a meaningful advance over the status quo. A drive achieving neutralism (Host 0/Guest 0) would eliminate the harm entirely, even without generating surplus. Mutualism (Host +/Guest +) is the most ambitious destination — and the one this case study proposes — but the matrix makes clear that the modification drive's value does not depend on achieving it perfectly.

This also reframes what "success" means for the modification drive programme. Rather than a binary pass/fail against a mutualist target, researchers could track the screwworm's position across the matrix over successive drive generations — a gradient of relational improvement rather than a single threshold to cross.

A Second Case: Ticks

The screwworm is not the only obligate parasite where this reasoning applies, and it is worth being clear about the order of operations before reaching for a gene drive again. Ticks are a growing public-health burden by any measure — expanding range, rising case counts, and diseases (Lyme, alpha-gal syndrome among them) that a recent op-ed argued the public has been slow to take seriously: "With ticks, we've barely begun to fight back."¹ But an extinction or modification drive belongs at the end of a list of options, not the top of one.

Simpler approaches first. Mingle's own reporting supports this ordering directly. He surveys measures already in use or in active development — deer-targeted insecticide delivery systems, vaccine research for humans, deer, and rodents, biodiversity restoration to bring back the predators that keep rodent reservoirs in check, and a federal funding push (the Kay Hagan Tick Act, alongside a new C.D.C. pilot programme aimed at reducing tick populations on wildlife before they can spread disease) — and concludes that full eradication is neither desirable nor achievable: ticks are too resilient, and the ecological damage would be severe. None of these measures touch the tick's genome. A modification or extinction drive is, on this framework's own terms, a tool of last resort — reserved for cases where the simpler repertoire has been tried in earnest and the relationship has not meaningfully improved.

Suppose that repertoire is exhausted and the outcome is still poor. Could a modification drive work on ticks the way this case study proposes for the screwworm? In principle, yes — the logic is identical: move the Guest's relation-perception away from the matrix's least desirable cells and toward more desirable ones. But the honest expectation should not be a leap straight to mutualism. A tick drive would more plausibly land somewhere in between — commensalism or neutralism rather than full mutualism, the difference between a Guest that stops actively harming its Host and one that begins actively benefiting it. Per the matrix logic established above, that would still represent genuine progress. The framework does not require the most ambitious cell to be reachable for an intervention to be worth attempting; it only requires the movement to be in the right direction.

The screwworm case study forces us to clarify how change can happen. There are primarily two different methods, and these may be distinguished according to whether the vector of relational attention is oriented inward to the parts, or outward to the whole. In simple outline: The Shift (internal alignment): A Guest may shift its narrow perception from engaging in actions that are only of utility to itself, to another set of actions whose utility is both to itself and the Host, thereby improving the dynamic of the relationship. The Shift is what we usually think of happening within a society. It refers to the quality of the relationship that exists among the parts, between the two dispositional orientations within any entity whether that is a society or an individual person, and among still finer divisions below those, and how that relationship can either improve or degrade over time. The Flip (external alignment): The Guest and Host roles may invert entirely, as seen when we look outward toward the large scale dynamics of the whole. It can be seen when we compare two or more societies with each other, or compare different historical periods of the same society, or compare two separate individuals. It characterizes which disposition (host or guest) is the more influential. It applies globally to the entity as a whole, not just a part. As noted, both of these processes, the Shift and the Flip, can occur simultaneously and at any scale of a system. A shift can create the conditions for a flip, in a bottom-up sense. And a flip can also induce a shift, in a top-down sense. Observing examples of when and how these processes have occurred provides us with some diagnostic and prescriptive applications.

Application to the "Other": When encountering outside entities, the host disposition aligns the other’s guest while encouraging the other’s host to expand its perception. That is to say, as hosts, when we encounter the other, we relate to each of their internal dispositions according to their respective vectors of relational attention: attempting to bring their guest-posture into greater alignment with the other (the process of the Shift), and encouraging their host-posture to expand its relation-perception (the process of the Flip). And we relate to our own dual dispositions in precisely the same way. The productive encounter of these opposing vectors of attention is where the magic of mutualism happens. Of the two processes, the Flip is the driving telos of the system, and the more significant of the two in that regard. Viewing complex biological or social systems through this lens provides a framework for guidance.

Notes

1. Jonathan Mingle, "We're Living in a Tick Nightmare. It's Time to Go to War," The New York Times, opinion, July 11, 2026.↩

← Return to The Framework

Case Studies — ongoing series.
Case Study I explores Lever 2's first interpretation: how Guest posture shifts impact relationship quality.
Case Study II explores the metaphysics and fractal nature of hospitality, using the example of AI alignment.
Case Study III completes the Lever 2 trilogy with the full inversion of Host and Guest postures across time, in mycorrhizal networks and human developmental transitions.
Case Study IV steps outside the trilogy to trace hospitality's aesthetic, ritual, and ornamental life across world traditions.

☷ COSMOXENIA ☰ — CASE STUDY: ARTIFICIAL SYMBIOGENESIS