Mode Search and Over-interpretation

Pattern-seeking and overinterpretation are the novel’s account of how the desire to connect scattered facts can turn interpretation into belief. The distinction is not between curiosity and indifference, but between following a connection cautiously and assuming that any gap must conceal a larger design. The characters’ invented Plan demonstrates the danger: a game of assembling analogies becomes a supposedly universal conspiracy, then an apparent reality for those who search for it.

Inference and Credulity

The narrator defines incredulity not as disbelief in everything, but as a disciplined willingness to believe one thing at a time and to require that the next belief follow from the first. Credulity works in the opposite direction: when two claims do not fit, the credulous mind assumes there must be a hidden third fact that joins them. That assumption makes contradiction seem like evidence of depth rather than a reason to reconsider. Yet skepticism does not extinguish curiosity. The narrator remains drawn to the polyphony produced when ideas collide, while distinguishing the pleasure of their juxtaposition from the conviction that they disclose a single truth.

That distinction becomes harder to maintain under pressure. At the Pendulum, Casaubon watches an ordinary couple fail to recognize the wonder he experiences and suddenly accepts that Belbo may have been right about the instrument. If Belbo’s claim is true, Casaubon reasons, perhaps the Plan and the universal plot are true as well. The leap is decisive: an intense experience lends credibility not only to one proposition, but to an entire structure of claims. The narrator later recognizes the risk in this conversion, observing that an experience of the numinous can quickly unhinge the mind.

Elsewhere, Casaubon catches himself making a different kind of leap. He invents an elaborate explanation linking Belbo’s password, Sophia, to Lorenza and to the private world of Abulafia, then recognizes that he has substituted his wishes for reality. The episode makes overinterpretation intimate as well as intellectual: the hunger to uncover a secret can turn desire into apparent evidence. A compelling interpretation is not thereby a true one.

From Historical Legend to the Plan

The Templar material supplies a ready-made field for connections. A legend claims that knights escaped the Paris Temple in a hay wain shortly before the arrests ordered by Philip the Fair, fled to Scotland, and became associated with Freemasonry. Casaubon identifies the familiar story as unsupported and repeatedly copied from pamphlet to pamphlet. Belbo nevertheless wants to investigate the Templars, and the legend’s persistence gives their research a seemingly continuous history to work with. The episode shows how repetition can masquerade as independent confirmation when later accounts merely borrow from earlier ones.

The same interpretive appetite transforms the Provins message. Casaubon initially dismisses it, but later reads its references to castles as evidence of a real Templar itinerary, placing its first meeting at Tomar and imagining a route through protected locations. He knows, however, that the task is not to discover an existing Templar secret but to construct one. The gap between discovery and invention remains visible even as he begins to treat the invented history as plausible.

The decoded message offers another example of interpretation filling in what the document cannot establish. Faced with illegible passages in Ingolf’s transcription, a reader supplies conjectures and presents the resulting translation as restored text. The confidence of the reconstruction exceeds the surviving evidence. In the novel’s pattern of pattern-making, missing information is not allowed to remain missing: it becomes an invitation to complete the design.

The Game Becomes Belief

Casaubon describes the trio’s practice as connecting everything with everything else. At first, their extravagant associations are a private parody of the reasoning used by conspiracy-minded writers; they are meant to expose, not endorse, the method. But repeated rehearsal changes the rehearsers. The habit of pretending to believe can become indistinguishable from belief itself. Casaubon sees himself as the least affected, partly because daily life with Lia and their child keeps him anchored, while Diotallevi and Belbo are, in his retrospective account, corrupted and converted in different ways. The game’s danger lies not in a single mistaken inference but in the accumulation of inferences until connection becomes automatic.

The Plan’s imagined universality is stated as an axiom: the Templars must have something to do with everything. Under that rule, even a fact as ordinary as Minnie Mouse’s engagement to Mickey Mouse can be absorbed into Hermetic interpretation. Refusing to admit that any fact might be without mystery would invalidate the method. The absurdity is deliberate, yet the principle also removes the possibility of a counterexample: whatever appears unrelated can be treated as a connection not yet understood.

The method eventually draws in people who were not present at its invention. Casaubon concludes that the Provins message was only a laundry list, that the supposed Templar meetings never happened, and that there was no Plan or message. Nevertheless, those seeking a hidden design recognize fragments of their own confused mythologies in the trio’s fabrication and treat them as proof that they have long belonged to it. Once others act on the invented Plan, Casaubon observes, it exists in its consequences even though it was never real as the history they imagine. The fiction gains power through the beliefs and actions it elicits.

Rules, Secrets, and Consequences

Casaubon sets out three rules that explain how the Plan’s connections can be made to feel compelling. First, concepts are joined by analogy, which can link objects through shape, category, biblical association, or a chain of verbal and conceptual steps. Second, a chain is accepted if it eventually returns to its starting point and seems to hold together. Third, the links must not be original: earlier use makes them appear obvious, and therefore true. Together, the rules turn accumulated precedent into apparent proof while allowing almost any starting point to reach almost any destination.

The novel connects this logic to the appeal of conspiracy itself. Confusion and frustration encourage people to blame an unseen enemy rather than acknowledge uncertainty or their own mistakes. Once someone invents a plot to explain failure, the imagined enemy’s methods can become a model for a counter-plot. The belief is self-reinforcing: suspicion generates a hidden agent, and the resulting story offers both an explanation and a target. Casaubon formulates the paradox that a secret, if it exists, must promise to dispel frustration or provide salvation; yet a secret revealed may disappoint precisely because it can no longer sustain that promise.

The Plan’s final secret is therefore not a concealed historical fact but an empty secret, one that keeps receding through endless interpretation. Casaubon connects this logic to the night at the Pendulum: Belbo’s refusal to disclose a secret convinces his interrogators that it must be immense, while his denial only strengthens their belief that he possesses it. The search itself has bound them together across their conflicts. For Aglie, disclosure would threaten the aura and power he draws from mystery; keeping the secret deferred also keeps that authority alive. Overinterpretation thus does more than mistake resemblance for evidence. It creates a secret whose value depends on never being resolved, and a world of believers who can no longer tell an invented connection from a discovered one.