Every point of the universe is a fixed point

“Every point of the universe is a fixed point” is the unsettling principle Jacopo Belbo draws from Foucault’s Pendulum: the instrument can appear to swing from a motionless point wherever it is installed, so no location is uniquely sacred. The observation does not abolish the search for meaning. It transfers responsibility for meaning to the observer, whose choice of a supposed center can turn an ordinary place—or an arbitrary collection of facts—into the heart of a system.

The Pendulum and the Chosen Center

Belbo explains the Pendulum’s mobility by contrasting its installation at the Conservatoire with hypothetical locations such as a brothel, the United Nations building in New York, and a science museum in San Francisco. In each case, the earth rotates beneath the suspended instrument. The apparent fixed point is therefore not proof that one site has been singled out by the cosmos; the same effect can be produced at many places. His broad conclusion is that every point can serve as a fixed point if the Pendulum is hung there.

The apparent universality of the claim carries a qualification. Belbo says the Pendulum promises the infinite, but leaves the question of where to place that infinite to the person looking at it. Worshipping the instrument is not enough: someone must choose the supposedly best point. The choice does not follow automatically from the Pendulum’s motion, and Belbo’s uncertainty about whether special places exist remains unresolved. What is within reach may go unrecognized, he suggests, unless people are prepared to believe in it.

Measurement and Manufactured Meaning

The expression resonates with the novel’s repeated demonstrations of how measurements can be made to support an imposed pattern. Aglie recites an occult reading of pyramid dimensions, connecting measurements of the Great Pyramid to a leap year, the distance from Earth to the Sun, and the value of pi. He then punctures the show of numerical certainty: using the exact dimensions rather than rounded figures produces 3.1417254, not pi, and he recounts the allegation that Piazzi Smyth chipped at a granite wall to make his calculations fit.

Aglie’s counter-demonstration turns the same method on a street kiosk. Its counter length, window proportions, heights, and thickness can be made to correspond to astronomical distances, pi, a lunar cycle, and the date of the victory at Poitiers. The point is not that the kiosk secretly embodies those histories, but that sufficiently selective arithmetic can make unrelated measurements look like confirmation. The fixed-point expression supplies the larger model: as a pendulum can be installed at any point, a system of interpretation can make almost any chosen point appear central.

Aglie extends the same skepticism to supposed ancient technologies. Electricity, radioactivity, and atomic energy, he argues, are only metaphors or substitutes for a forgotten force sought by initiates; he names telluric currents as a possible term for it. His confident vocabulary gives a speculative claim the cadence of explanation, even as the conversation exposes how readily physical measurement and technical language can be recruited into occult systems.

From Interpretation to the Plan

Casaubon’s account shows how the habit of assigning hidden significance can spread beyond an isolated argument. He finds it increasingly difficult to separate magic from factual history: figures associated with mathematical and physical enlightenment appear in accounts of cabala, laboratory work, and occult interests. Although he had regarded doubt as a scientific duty, he begins to distrust the very authorities who taught him to doubt.

The shift becomes personal and pervasive. Casaubon catches himself marveling at the supposed correspondence between the Great Pyramid’s height and one-billionth of the distance between Earth and the Sun, and at parallels between Celtic and Amerind mythologies. He begins looking at houses, shop signs, clouds, and library engravings as if each concealed a deeper story waiting to be disclosed by mystical resemblance. The search for a fixed point has become a search for a hidden message everywhere.

The Plan magnifies this interpretive impulse into a theory of planetary control. Its account imagines Earth as a great magnet whose currents are influenced by celestial bodies, seasons, and cosmic cycles. The Templars, in this invented synthesis, needed not only a global map of the currents but the critical point—the Navel of the World—from which they could direct them. Alchemical stages become metaphors for discovering and mastering this planetary rhythm. Here, the movable center suggested by Belbo’s Pendulum is transformed into a coveted command center: the Plan accepts universal connection but insists that one decisive location must govern it.

Irony and Consequence

The expression is therefore both a philosophical opening and a warning. If every point can be treated as fixed, then no single place proves itself to be the cosmic center. Yet the same flexibility makes it possible to select a center first and assemble correspondences around it afterward. The novel stages that danger in numerical demonstrations, in the Plan’s imagined geography of telluric currents, and in Casaubon’s growing willingness to read ordinary surroundings as evidence of another story.

Lia interrupts that drift, at least temporarily. After Casaubon tells her almost everything about his trip to Piedmont and continues bringing home new cross-references, she answers his accumulating theories with the concrete instruction to eat and the attention of an intimate conversation. The contrast restores a distinction the expression threatens to blur: the world can invite interpretation without every apparent resemblance proving a hidden design. The Pendulum marks no privileged center by itself; the compulsion to find one belongs to the interpreter.