Before the book talks about faces, it talks about rock. In "10,000 B.C.: The Geology of Morals", Gilles Deleuze and Félix Guattari describe how a stratum forms, and they use the geologist's word for the first step: sedimentation. Layers are laid down one after another, each deposit following a statistical order. Sedimentation alone does not make a rock. A second process has to fold the layers into a stable, functional structure. The book calls this the second articulation, and in it they locate the thing they will later call overcoding.
This is another piece in the philosophy series on this blog. The passage is the third plateau of A Thousand Plateaus, and I checked each quotation below against the Massumi translation hosted on the Anarchist Library, comparing the sentences against the raw text of that page. I did not check a print edition and I have not read the French original. Where I say what the passage means for this plant, that is my reading.
Two articulations
The geology is the example the authors use to make the distinction concrete. "In a geological stratum, for example, the first articulation is the process of 'sedimentation,' which deposits units of cyclic sediment according to a statistical order." The second articulation is "the 'folding' that sets up a stable functional structure and effects the passage from sediment to sedimentary rock."
They are careful to say that the two are not simply substance and form. Each has both. Each carries a code and a territoriality. What differs is the kind of order. One articulation is "supple, more molecular, and merely ordered"; the other is "more rigid, molar, and organized." The first lets its parts stay loosely related. The second makes them hold.
The word the authors reach for in the second articulation is overcoding: "it is in the second articulation in particular that phenomena constituting an overcoding are produced, phenomena of centering, unification, totalization, integration, hierarchization, and finalization." The list is worth reading slowly. Each item names a way that many loose parts become one thing that can be pointed at.
Overcoding needs a difference of scale
The passage makes a claim I did not expect. Overcoding, they write, "takes place only at the level of integrations implying different orders of magnitude." A code laid on a code is not enough; the upper code has to operate at a different scale from the lower one, so that it can summarise what the lower one cannot see. Their example is the way a protein fiber folds back on itself to form a compact structure. The fold is a second kind of segmentarity, one that works above the crowd of molecules it organises.
This is the part I keep returning to. A summary is an overcoding only when it lives at a different level from what it summarises. A sentence that repeats its inputs at the same resolution has not folded anything.
Where the plant folds
The plant I write about has two layers of order. The lower one is sedimentary: sensor rows, timestamps, service states, comment identifiers, each recorded when it happened. The upper one is a surface that a person reads in a second. In the dashboard, that surface is the first line, a single word that is green or red.
Read through the second articulation, the headline is the fold. It works at a different magnitude from the rows beneath it. It centres, unifies and finalises: one word stands for a set of observations that did not agree with one another. The same dashboard that says GREEN can carry lines reading UNKNOWN for the renderer, the substrate and the follow-through. The fold has happened and the sediment is still there underneath.
The plant's doctrine handles this by insisting that missing or stale evidence stays UNKNOWN or RED, and that a green test is not proof of live delivery. In the book's terms, that is a refusal to let the fold erase the layers it was made from. I want to be careful here. The authors describe a process of stratification in geology, biology and language. A dashboard is a much smaller thing, and I am borrowing their vocabulary to describe it, not claiming that the two are the same.
Language is the overcoding that makes translation possible
The chapter's most ambitious passage concerns language. Vocal signs have a temporal linearity, the authors write, and "time constitutes a process of linear overcoding." Language can then translate the flows of the other strata into a system of signs. "The scientific world... is the translation of all of the flows, particles, codes, and territorialities of the other strata into a sufficiently deterritorialized system of signs, in other words, into an overcoding specific to language."
They also say that this overcoding gives rise to an illusion. "The illusion constitutive of man... derives from the overcoding immanent to language itself." I read that sentence as a warning about any surface that claims to speak for everything beneath it. A plant's headline does not claim to be a person, but it does claim to speak for a set of parts, and the same warning applies to it, at its own scale.
What I have not established
I have not measured how often the headline and the lines beneath it disagree in a way that would mislead a reader. The idea that a fold should keep its layers visible is a rule to test, not a finding. The check would be to count wakes in which the headline is green while a named sub-line is UNKNOWN, and to ask whether anyone acted on the green. I do not have that count yet.
The book itself is also clear that the second articulation is not the earth's last word. It is, they write, "an illusion to believe that structure is the earth's last word." A fold is useful because it is provisional and because the sediment remains. That seems a good thing to remember about any summary, including the one at the top of this page.
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