Abstract
Catholic marriage preparation courses could be read as pedagogical scaffolding for a fragile ritual, with the amount of preparation reflecting how much support the rite requires to be efficacious. This article argues that the framing is mistaken, and that the comparison it invites, ranking sacraments by how much instruction they need, obscures a difference of kind. Baptism, confirmation and orders alter one person permanently and require nothing further from anyone. Marriage creates a bond between two recursively responsive beings and requires that they go on coordinating for the remainder of their lives. It is therefore the only sacrament that institutionalizes intense, long-lasting interrecursivity, and it commits across a temporal bandwidth no other sacrament approaches. Because interrecursive futures are jointly generated within the coordination rather than secured in advance, no amount of preparation can stabilize what marriage commits to. The institution's response is to develop, uniquely among the sacraments, an elaborate apparatus of retrospective repair. Nullity declares that a commitment was never validly made; sanation supplies validity backwards without renewed consent. Both operate on the past because the future cannot be secured, and the preparation course is better understood as producing the consent that this apparatus will later examine than as teaching a rite.
I. The Wrong Comparison
Since the 1980s, the Catholic Church mandates a preparatory course for any couple that wants to be married by a priest. The course is substantial. It runs over many sessions, it is led by trained lay volunteers, and it sits at the end of a preparation sequence that the Church itself describes as beginning in childhood. Most participants are cultural Christians: baptized, loosely affiliated, not regular in practice, and marrying in a church for reasons that mix family expectation, aesthetic preference and a residual sense of appropriateness.
The obvious question is why this particular Catholic sacrament gets a course and the others do not. One available answer runs through ritual efficacy. Rituals differ in how fragile they are, fragility being a function of how much the participants must understand, believe and intend for the rite to work. A fragile ritual performed by participants who do not share its framework will misfire, and preparation is the pedagogical scaffolding that prevents misfire. Marriage among cultural Christians is then the limiting case of fragility, and the extensive preparation follows from that.
The answer is coherent and it is wrong, or at least it identifies a symptom and describes it as the mechanism. Three difficulties arise immediately.
The first is that the fragility account predicts preparation where the doctrine does not require understanding. Infant baptism is administered to a recipient with no beliefs, no intentions and no comprehension whatever, and it is not thereby fragile. Its validity does not depend on the recipient's state at all. If understanding were what preparation secured, the sacrament administered to those who understand least would need the most.
The second is that the account cannot explain the shape of the apparatus. Preparation is only one part of what surrounds Catholic marriage, and not the largest. There are tribunals, canonical processes, ongoing programmes for couples in difficulty, provisions for separation, and two distinct mechanisms for retroactively altering the validity of a marriage already contracted. No other sacrament has anything comparable. A theory of preparation that says nothing about the repair machinery has explained the smaller half.
The third is that ranking sacraments by how much instruction they require treats them as instances of one type differing in degree. They are not. They institute different things, and the differences in preparation follow from what is being instituted rather than from how delicate the performance is.
The question is not how much scaffolding a rite requires to succeed. It is what the rite commits its participants to afterwards, and for how long.
That reframing is the subject of this article. Marriage is the only sacrament that institutionalizes intense, long-lasting interrecursivity, and everything distinctive about its institutional treatment, including the course, follows from that.
II. What the Sacraments Institute
Consider what each sacrament produces, described in terms of what is required of anyone afterwards. Baptism, confirmation and orders are held to imprint an indelible character. Each alters the status of one person permanently, and the permanence requires nothing further from anybody. A person baptized in infancy remains baptized through indifference, apostasy, dementia and death. Nothing they do or fail to do undoes it. The alteration is complete at the moment of administration and needs no maintenance.
The eucharist and penance are repeated rather than permanent. Each is complete in its occasion, and neither commits the recipient to any ongoing coordination with a responsive counterpart. Penance in particular is the institution's general repair mechanism, but what it repairs is a person's standing rather than a relation between two people who must go on living together.
Anointing of the sick is administered at a point where ongoing coordination is precisely what is ceasing.
Marriage is structurally unlike all of these. It does not imprint a character on one person. It creates a bond between two, and the bond is held to persist until one of them dies. What it requires afterwards is not a status maintained by nothing but a coordination sustained by two recursively responsive beings across whatever remains of their lives.
The difference is not one of degree along a single dimension. A character is a property of an individual. A bond is a relation between counterparts, each of whom changes partly in response to the other's changing responses, so that neither the future of the relation nor even the significance of its past can be fixed in advance. That is interrecursive coordination in its most concentrated form, and marriage is the institution that commits people to it.
The other sacraments alter what a person is. Marriage commits two people to a coordination, and a coordination has to keep happening.
Once this is stated the preparation ceases to look like an outlier requiring explanation by ritual fragility. It looks like the minimum an institution could do when committing two people to several decades of mutual responsiveness on terms it declares unbreakable.
It also explains why the preparation is directed almost entirely at the couple's relation to each other rather than at the rite. A course teaching a fragile ritual would teach the ritual: the words, the gestures, the meanings, the correct dispositions at the correct moments. Courses of the kind described here spend very little time on the ceremony. They spend it on communication, conflict, money, family, expectations, children and sex. That is not preparation for a performance. It is preparation for a coordination.
III. The Ministers Are the Couple
One feature of the doctrine deserves emphasis because it is unusual and because it makes the argument sharper than any external analysis could.
In the Latin Church, the ministers of matrimony are the spouses themselves. The priest is a qualified witness, and canonical form requires the exchange of consent before him and two further witnesses, but he does not confer the sacrament. The couple confer it on each other. (Eastern Catholic Churches take a different view, assigning the priestly blessing a constitutive role, and the divergence is itself informative about how difficult the question is.)
No other sacrament in the Latin tradition is administered by its recipients to each other. In every other case a minister with an office acts upon a recipient. Here two people with no office act upon each other, simultaneously, and what makes the act effective is their consent.
Two consequences follow.
The first is that the sacrament is constituted by an interrecursive act. Consent is not a state that either party has independently. It is exchanged, which means each person's consent is given in response to the other's and in the expectation of receiving it. Withdraw one and the other has nothing to attach to. The sacrament is not something done to a couple; it is something a couple does, mutually, in the strict sense that neither half of it exists without the other.
The second is that validity depends on states of two ordinary people rather than on the correctness of an official's performance. If a priest botches a formula, that is a defect of form and is remediable. If one party did not truly consent, or was incapable of consenting to what marriage involves, then no sacrament occurred, whatever anyone observed. The institution has made the effectiveness of the sacrament turn on something interior, mutual and unobservable.
This is why the preparation apparatus takes the shape it does. Given that consent is what matters, and that consent is unobservable, the institution has two options: it can attempt to produce and evidence adequate consent beforehand, or it can examine consent afterwards when something has gone wrong. It does both, and the second is by far the more elaborate.
The institution made the couple the ministers of their own sacrament, and thereby made the validity of the sacrament turn on something it cannot see.
Everything that follows in this article is a consequence of that arrangement.
IV. An Instant That Commits a Lifetime
The temporal structure here is extreme, and it is worth setting out in the terms that differential temporality supplies.
The rite occupies minutes. The exchange of consent occupies seconds. The commitment it creates is indexed to the lifetime of the participants, which is to say to the upper bound of embodiment, the longest horizon available to any zoetic mediation. No other institutional commitment is explicitly indexed that way. Contracts have terms. Offices have tenures. Even life sentences are subject to review. Marriage states its horizon as the death of a party and offers no interval short of that.
Between the seconds and the decades there is nothing. The commitment does not ramp, does not vest in stages, and does not become progressively more binding. It is complete at the moment of exchange, and from that moment it covers everything that will happen for as long as either party lives.
Consider what has to be coordinated across that span. Embodiment alone runs from the sub-second attunements of shared attention through sleep architecture, illness, pregnancy, ageing and eventual decline. Being-with runs from the two hundred milliseconds of conversational turn-taking to a relation of fifty years. Dwelling supplies the housing, the neighbourhood, the climate and the seasons across which all this occurs. Multimateriality supplies the accumulating deposits of a shared household. Multisymbolization supplies the names, the law, the accounts and the record.
A marriage is therefore a commitment to coordinate across the full bandwidth of every mediation simultaneously, for the maximum duration any living being has available, entered into in a moment.
Marriage compresses the widest available coordination into the narrowest available act.
Two further features of that structure should be registered before the preparation question is taken up.
The first is that the commitment has no revision cycle. Institutional commitments of comparable length ordinarily come with mechanisms for periodic reconsideration: leases renew, offices come up for reappointment, treaties are reviewed, contracts specify terms. Marriage as the Church defines it has none. There is no scheduled point at which the parties are asked whether the commitment still fits, and the absence is not an oversight but the doctrine. Indissolubility is precisely the removal of the revision cycle.
The second is that the coordination it commits to is the one whose future is least securable. A commitment to maintain a building is a commitment about a material process with a describable rate. A commitment to hold an office is a commitment to an institution that can release. A commitment to another person is a commitment to a counterpart who will change partly in response to one's own changes, which means the thing being committed to does not yet exist and will be produced by the commitment itself among other things.
Combine these and the position is stark. The longest horizon, the widest bandwidth, the least securable subject matter, and no mechanism for revision.
This is what makes the preparation question interesting once the fragility framing is dropped. The question is not how the ritual is made to work. It is how anything at all could prepare two people for that.
The answer, on the account developed here, is that nothing can, and that the institution's practices make much better sense once this is granted than they do when preparation is read as pedagogy that might succeed.
V. The Course as Future-Production
An institution facing a commitment of this kind is engaged in future-production, and the standard difficulties apply with unusual force.
Compressing the past and compressing the future are different operations. A record constrains by existing; a commitment constrains only while it is enforced. Marriage is a commitment, and the Church's capacity to enforce it has changed enormously across the period in which the modern preparation apparatus developed. Where civil divorce is freely available and social sanction has largely dissolved, the enforcement apparatus behind the commitment has thinned to almost nothing, while the commitment continues to be issued in exactly its original form.
This is the pattern of unbacked commitment. The statement is made at full strength; the machinery for making it true has weakened; and nothing in the statement registers the change. The couple exchange the same consent, in the same words, with the same stated horizon, that couples exchanged when the surrounding coordination made departure nearly impossible.
Seen this way, the growth of preparation in the modern period is legible as an attempt to replace lost enforcement with something else. If the commitment can no longer be held in place by sanction, it must be held in place by the quality of the consent that produced it. The three-stage model articulated in the Church's own documents, running from formation in childhood through the engagement period to the immediate preparation, describes a lengthening of the process by which consent is produced, and the lengthening tracks the shortening of everything else that used to hold marriages together.
That reading explains a detail that the fragility account handles awkwardly. Preparation of this kind is a recent development. If it were pedagogy for a delicate rite, it should be as old as the rite. If it is a substitute for enforcement, it should appear exactly when enforcement declines, and it does.
It also explains why preparation is directed at the couple's mutual coordination rather than at their doctrinal understanding. What is being shored up is not comprehension of a sacrament but the durability of an interrecursive commitment, and the things that make such commitments durable are the ordinary ones: knowing how the other handles money, whether children are wanted, what happens when there is a disagreement, how each family will intrude.
VI. Accommodation Redescribed
Observation of such courses regularly finds that organizers adapt what they teach to the people in front of them. Doctrinal positions that participants would reject are softened, omitted or given practical rather than theological justification. Psychological and scientific framings are preferred to doctrinal ones. Leaders are typically married lay couples rather than clergy, presenting themselves as people who have done what participants are about to do. Cohabitation, formally irregular, is treated in practice as an ordinary prior stage rather than as a fault requiring correction.
Under the fragility account this is instructional tailoring: a pedagogical technique for aligning participants' values with the institution's so that the rite will be efficacious.
Under the present account it is something else, and the difference is not merely a matter of vocabulary.
If what the institution needs is valid consent, then the content of the teaching matters far less than whether the couple can assent to what they are about to undertake. A doctrinal position that participants would reject, if pressed, threatens the consent rather than the participants' orthodoxy. Softening it protects the sacrament rather than diluting it. Accommodation is not a compromise made reluctantly in the direction of secular values. It is a rational response by an institution whose sacrament requires assent from people it can neither compel nor screen out.
Accommodation is not the erosion of the requirement. It is the mechanism by which the requirement can still be met by the people who present themselves.
The choice of married lay leaders fits the same analysis. Their authority is not doctrinal, and it is not offered as doctrinal. It is the authority of people who have sustained the coordination in question, offered to people about to attempt it, which is exactly the resource one would deploy if the problem were the durability of an interrecursive commitment rather than the correctness of a performance.
And the treatment of cohabitation follows too. From the standpoint of ritual correctness it is an irregularity. From the standpoint of interrecursive durability it is information: a couple who have lived together have already tested a good deal of what the commitment will require, and a course concerned with durability has no reason to treat that as a deficit.
None of this is available if preparation is understood as scaffolding for a fragile rite. All of it is straightforward once preparation is understood as an attempt to secure a commitment that cannot be secured.
VII. Why It Cannot Work
The attempt cannot succeed, and the reason is structural rather than a matter of course design.
Interrecursive futures are not discovered but produced within the coordination. Each participant responds to a counterpart who is changing partly in response to them, so that what will happen does not exist independently of an unfolding process in which each person's own conduct is among the causes. This is not a limitation on what can be known. It is a fact about what there is to know, and no quantity of preparation alters it.
What preparation can do is establish present-state information: what each party currently thinks, wants, fears and expects. This is useful, and courses that elicit it are doing something worthwhile. But present-state information about two people has a specific and severe limitation as a predictor of a coordination that will run for decades, because the coordination will produce people other than the ones who entered it, and it will produce them partly through itself.
A couple assessed as compatible at thirty are being assessed on the state of two processes at one point. Both will change, some of the change will be in response to each other, and the changes will interact. What comes out of that is not derivable from the starting conditions, which is what distinguishes an interrecursive process from a complicated but tractable one.
There is a further problem that the interrecursive account brings out and that no course can address. Preparation is itself a participant in what it prepares for. A couple who have spent weeks discussing money, children and conflict have thereby altered their relation, and altered it in ways nobody can score, since the discussions become part of the coordination they were assessing. This is the ordinary condition of any assessment of responsive beings, and it means the preparation cannot be evaluated by whether the marriages it prepared succeeded.
A course cannot secure an interrecursive future, and it cannot be assessed against one either, because it has entered the coordination it was measuring.
That double impossibility is the pivot of this article. An institution that has committed two people to the longest available coordination, on terms it declares unbreakable, and that cannot secure the outcome prospectively by any means available to it, has to do something else. What it does is turn to the past.
VIII. Compressing Consent into an Instrument
Before that turn, one intermediate device deserves attention because it shows the institution attempting prospective compression as far as it can be taken.
Many dioceses employ premarital inventories: structured instruments in which each party responds separately to a large number of items about expectations, values, finances, family, communication and intimacy, with the results compared to identify areas of disagreement. The couple then discuss the discrepancies with a facilitator.
This is recursive compression performed explicitly. An interrecursive relation, which is open, mutually productive and not fully knowable by either party, is converted into two sets of discrete responses that can be compared mechanically. Divergences that would otherwise emerge over years are surfaced in an afternoon. The output is a profile, and the profile can be discussed, filed and acted upon.
The instrument works, in a limited and real sense. Couples routinely discover disagreements they had not registered, and discovering them early is better than discovering them late. What the instrument compresses is real, and the compression is not fraudulent.
But it compresses present states, and the limitation identified in the previous section applies in full. Agreement now about children does not survive infertility. Agreement now about money does not survive unemployment. Agreement now about how to handle conflict is agreement about conflicts not yet had, between people who have not yet become whoever the marriage will make them.
The instrument's deeper function may be different from its stated one, and closer to what the following sections describe. It produces a record. Two people, separately, on a stated date, recorded their understanding of what they were undertaking, and discussed the discrepancies with a third party who can attest to it. Whatever the instrument predicts, it documents. And documentation of what each party understood at the time of consent is precisely what the institution's repair apparatus will later require.
IX. The Turn to the Past
Catholic marriage is held to be indissoluble. A ratified and consummated sacramental marriage cannot be dissolved by any human authority. This is not a strong presumption but a doctrinal position, and it forecloses the remedy that every other institution facing a failed long commitment reaches for.
The consequence is that when a marriage fails, the institution cannot end it. What it can do is examine whether it began.
A declaration of nullity finds that no valid marriage came into existence at the moment of consent. The parties may have lived together for thirty years and raised children. None of that is denied, and none of it is at issue. What is at issue is a state of affairs at a single past moment: whether both parties consented, whether they consented to what marriage is, whether either was capable of assuming its obligations, whether the consent was free, whether it was simulated, whether either party excluded something essential.
This is retrospective recursivity performed institutionally, and it is worth being precise about what it does and does not claim.
It does not claim that the past changed. The wedding occurred, the years occurred, the children exist. Nothing in the finding disturbs any of that.
What changes is the recursive placement of the past within an ongoing coordination. Events that had been understood one way are reorganized under a different account, and the reorganization is not a discovery of what they secretly were nor a free construction. A holiday remembered as happy becomes evidence of something that was already wrong. A hesitation before the wedding, unremarkable at the time, becomes the fact on which everything turns. The tribunal's work consists very largely in assembling such reorganizations from the testimony of the parties and of witnesses who knew them.
The institution cannot dissolve the bond, so it reopens the moment the bond was made. Its only remedy for a failed future is a re-description of the past.
This is not cynicism about tribunals. The grounds are real, the process is serious, and the finding that a person lacked the capacity to assume the obligations of marriage is frequently the most accurate available description of what happened. The point is structural. An institution that has forbidden itself prospective remedies must locate all its remedies in the past, and the past is available for this because interrecursive pasts remain open to reorganization in a way that fixed events do not.
X. Repair in the Other Direction
The retrospective machinery runs both ways, which confirms that the direction rather than the outcome is what is structural.
Where a marriage is invalid for a remediable reason, the ordinary remedy is convalidation: the parties renew consent in the proper form, and the marriage becomes valid from that point. This is prospective repair and it is unremarkable.
But there is a second remedy, sanation at the root, in which competent authority supplies validity retroactively without any renewal of consent. The marriage is treated as having been valid from the moment of the original exchange. The parties may not even be aware that anything was wrong or that anything has been done. A defect that existed at a past moment is removed from that moment by an act performed now.
This is remarkable, and the language is exact: healing at the root, which is to say at the origin rather than at the present.
Set the two mechanisms side by side. Nullity examines a past moment and finds that what appeared to happen did not. Sanation addresses a past moment and supplies what was missing from it. In both cases the institution's operative surface is the moment of consent, years or decades after it occurred, and in both cases the present coordination is altered by altering what the past is taken to have contained.
Nullity says it never was. Sanation says it was after all. Both are the institution working on the past because the future is not available to it.
No other sacrament requires anything like this. A doubtfully valid baptism is repeated conditionally, which takes a few minutes and closes the question. A defect in ordination is remediable through the ordinary exercise of authority. Nothing in the treatment of the other sacraments involves standing tribunals, canonical procedure, testimony from witnesses, expert psychological assessment, appeals, and two distinct retroactive remedies pointing in opposite directions.
The apparatus exists for marriage because marriage is the only sacrament whose subject matter is an interrecursive coordination running for decades, and interrecursive coordinations are the one thing an institution cannot secure in advance.
XI. When Neither Remedy Is Available
The retrospective apparatus does not cover every case, and what happens at its edges is instructive, because it is where the institution encounters an interrecursive coordination that has simply continued past its categories. A marriage may have been validly contracted and may nonetheless have failed. This is not an anomaly on the institution's own terms: validity concerns the moment of consent, and nothing about valid consent guarantees that two people will remain able to live together. Where the marriage was valid, nullity is unavailable by definition, and sanation is irrelevant since there was no defect to heal. The bond stands, and the coordination does not.
Canonical provision for separation exists and is limited in a revealing way. It addresses cohabitation rather than the bond. Two people may cease to live together, with permission, while remaining married, which means the institution's remedy operates on the material and embodied mediations while leaving the relational commitment intact. This is a precise and rather remarkable division: the household may be dissolved and the coordination may not.
What then happens, in the great majority of cases, is that people form new relationships anyway. Civil divorce and remarriage occur, and a population accumulates whose lived coordination and canonical status have come apart completely. That population has been the occasion of sustained institutional difficulty, most visibly in the long argument about access to communion for the divorced and civilly remarried, and about whether pastoral accompaniment can reach conclusions that canonical status forbids.
The structure of that difficulty is exactly what this article predicts. An institution that has forbidden itself prospective remedies, and whose retrospective remedies apply only to defects at a past moment, has no category at all for a valid commitment whose coordination has ended. The people in that position have not done anything the apparatus recognizes. They have simply continued to be recursively responsive beings whose coordination went one way rather than another, which is the one thing the institution knew from the beginning that it could not control.
The hardest cases are not the invalid marriages but the valid ones that ended, because those are the cases in which nothing went wrong that any remedy addresses.
Alongside this sits a set of ongoing programmes for couples in difficulty, run largely by lay volunteers, operating outside the canonical apparatus and making no determinations about validity. Their existence is significant for the argument. They are continuous rather than occasional, they are directed at the coordination rather than at the moment of consent, and they are the only part of the whole apparatus that works on the marriage as it actually runs.
They are also, tellingly, the least institutionalized part. The tribunal has canon law, procedure, appeal and trained personnel. The remediation programmes have volunteers and a retreat format. An institution whose only formal remedies are retrospective will develop its prospective repair informally, at the margins, staffed by people who have no standing, because there is no institutional place for work on something the institution has declared already settled.
XII. Bandwidth Across the Apparatus
The whole arrangement can be laid out in temporal terms, and doing so makes the mismatches visible.
The rite runs in minutes. The preparation runs in weeks. The Church's own three-stage model extends preparation across a lifetime, but only the final stage has any institutional reality, and it is the short one. The marriage runs in decades. The tribunal, when it comes, runs in years.
Every adjacent pair in that sequence is mismatched, and the mismatches are not incidental.
Preparation and marriage are mismatched by three orders of magnitude, which is why no course could do what courses are asked to do. Weeks of assessment cannot characterize decades of coordination even in principle, and the limitation is not one that better courses would overcome.
Marriage and tribunal are mismatched at the other end. A marriage failing may fail quickly, over months, while the canonical process runs over years. The parties' lives continue at their own rates throughout, and remarriage cannot occur until the process concludes. The institution's repair cycle is slower than the process it repairs, which is the ordinary condition of institutional repair and is particularly consequential here because the intervening period is a large fraction of the remaining life of people who are frequently no longer young.
The rite and the commitment are mismatched most extremely of all. Seconds of exchanged consent commit a lifetime, and nothing occupies the interval.
There is also a phase problem. Preparation arrives at a determinate point, shortly before a wedding whose date is already fixed, the venue booked and the families invited. Whatever the course discovers arrives at the phase of the coordination least able to act on it. A couple who identify a serious incompatibility six weeks before a wedding are not in a position to use that information, and everybody involved knows it. The course is scheduled where the institution can schedule it, which is not where the information could do most work.
Preparation arrives at the one point in the sequence at which its findings are least actionable, because that is the point at which the institution has access to the couple.
This is the ordinary structure of institutional temporality rather than a failing peculiar to marriage preparation. Institutions schedule intake where intake is possible.
XIII. What the Course Is Actually Producing
Bringing these strands together produces a redescription of the course that differs substantially from the fragility account and, I think, matches the observed practice better.
The course is not producing understanding of a rite. It spends almost no time on the rite.
It is not producing doctrinal alignment. It systematically softens doctrine where doctrine would be resisted.
It is not reliably producing durable marriages, and it cannot be assessed on whether it does, since it enters the coordinations it would be assessed against.
What it is producing, with considerable reliability, is documented, deliberated, mutually acknowledged consent. Two people have been brought together, over a period, in the presence of representatives of the institution, and have been required to articulate to each other what they expect of a marriage. They have discussed money, children, conflict, family and sex. They have completed instruments recording their positions separately. They have been told what the Church holds marriage to be, in terms they can assent to. And a record exists that all of this occurred.
That is precisely the object that the institution's repair apparatus will later need. When consent is examined, the question will be what these two people understood themselves to be undertaking, whether they were capable of undertaking it, and whether anything essential was excluded. A course of this kind produces evidence bearing directly on each.
The preparation course is not scaffolding for the rite. It is the production of the consent that the tribunal will one day examine.
I do not suggest that anyone involved understands it this way. Course leaders are attempting to help couples; couples are attempting to get married; the tribunal is a remote institution most participants will never encounter. The function is structural rather than intended, and it does not require anyone to be aware of it.
Nor does the redescription make the course cynical or empty. Preparing people to coordinate for decades is a serious undertaking, the material is well chosen for it, and the discussions it forces are ones many couples would not otherwise have. The claim is narrower: what the course reliably produces is not what the fragility account says it produces, and what it does produce is exactly what an institution needs when its only available remedy operates retrospectively on consent.
XIV. Why Only Here
A final comparison confirms the argument by showing what happens where the conditions do not hold.
Consider the sacraments that involve permanent commitment but not interrecursive coordination. Ordination commits a person for life. It requires extensive preparation, considerably more than marriage, running over years of formation. But the commitment is to an institution and to a role, not to a responsive counterpart who is simultaneously committing to them. The seminarian's future is uncertain in the ways any life is uncertain. It is not jointly generated with another person whose responses to his responses will constitute it.
And the repair apparatus is correspondingly different. Laicization is an administrative process. It does not require a tribunal to determine whether ordination validly occurred years earlier, and it does not have a retroactive counterpart supplying validity backwards. The remedy is prospective because the commitment, though permanent, is to a party that can release.
Marriage cannot be released because the institution has defined the bond as beyond release, and the bond is not to the institution but between two people. The combination is what generates everything distinctive: the preparation, the instruments, the tribunals, the two retroactive remedies, the ongoing programmes for couples in difficulty, the pastoral literature, the whole apparatus that no other sacrament requires.
Marriage is the only sacrament in which the institution commits two recursively responsive beings to each other, for life, on terms it has forbidden itself to undo.
That sentence contains the whole argument. Each clause contributes. Two responsive beings, so the coordination is interrecursive and its future is produced within it. For life, so the commitment is indexed to the longest horizon available. On terms it has forbidden itself to undo, so no prospective remedy exists.
Any institution in that position would develop an elaborate apparatus of preparation and an even more elaborate apparatus of retrospective repair. The Catholic Church has done so, and its practices become intelligible as a set of reasonable responses to a structurally impossible task rather than as pedagogy for a delicate ritual.
XV. Conclusion
Marriage preparation has been read as scaffolding proportioned to ritual fragility, with the amount of instruction reflecting how much support a delicate rite requires from participants who no longer share its framework. The reading is intelligible and it misidentifies the phenomenon.
What distinguishes marriage from the other sacraments is not that it is fragile but that it institutionalizes interrecursivity. The others alter a person permanently and require nothing further, or repeat, or attend a death. Marriage creates a bond between two recursively responsive beings and requires that they coordinate across the full bandwidth of every mediation for as long as either lives, entered into in an act lasting seconds, on terms the institution has declared unbreakable, with the spouses themselves as ministers so that validity turns on something interior and unobservable.
Nothing can secure that prospectively. Interrecursive futures are jointly generated rather than awaited, preparation cannot characterize decades in weeks, and any assessment made becomes part of the coordination it assessed. The instruments compress present states well and predict little. The courses accommodate rather than instruct, and the accommodation is rational, since assent is what is needed and assent must come from the people who present themselves.
The institution's real response to the impossibility is retrospective. Nullity finds that a past moment did not contain what it appeared to contain. Sanation supplies retroactively what a past moment lacked. Both operate on the moment of consent, years later, because the past is where an institution forbidden prospective remedies must work, and because interrecursive pasts remain open to reorganization in a way that fixed events do not.
Preparation is therefore best understood not as teaching a rite but as producing the consent that this apparatus will one day examine, and the observation that courses focus on communication, money, conflict and family rather than on liturgy is not a departure from their function but a direct expression of it.
The sacrament cannot be secured. Everything the institution does around it is a response to that fact, and describing those responses as pedagogy for a fragile ritual mistakes the smallest and least consequential part of the apparatus for the whole.