Yes, Preserved Context for an AI agent is a crude surrogate for Biological Memory
In a living control system, memory is … is the reorganized, persistent physical structure of the hierarchy itself — tuned gains, established comparator references, and physically continuous feedback loops.
In the conjecture that I have recently advanced, in addition to control loop structures this persistent structure includes hierarchically organized associative memory. Here begins a discursus, but I will bring it back on topic.
Control loops are at the lower levels up to and including Configurations and Transitions. Configuration of one’s own body (e.g. orientation of head and limbs), orientation of one’s body relative to other configurations (objects). Here’s Bill in B:CP Chapter 9:
We can define a configuration as an invariant function of a set of sensation vectors, thus implying particular computing properties common to these different input functions: They abstract invariant relationships so that the third-order signals will change only if sensation vectors on which they are based change in certain ways. Kinesthetically, this might mean that a hand-body configuration would be perceived as the same despite varying levels of effort and despite changes in orientation of the connecting arm relative to the body. Visually, it might mean perceiving the separation of two points as constant regardless of the direction of the line joining them in space and regardless of the amount or color of illumination.
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What we express in serial language as “the big chair catty-corner on the far side of the room” is probably perceived at third order all in parallel: big and chair and catty- comer and far and side and room. And these elements, I am supposing, are all third-order perceptions, derived separately by as many third- order input functions operating simultaneously…
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If invariant objects are invariant because certain types of changes are ignored, then we have to account for the (often overlooked) fact that we can also see the differences
when we observe a chair from different angles.
As a student, Debussey seized a chair and held it upside down to illustrated his disagreement with the teacher’s assertion that a chord and its inversion were different chords.
Note that “catty-corner” denotes a relationship from the observer to the diagonally opposite corner of a “room” configuration (probably quadrilateral), with the observer’s position probably in or near a corner. Already in the orientation of one’s head and limbs relative to the torso, and in the orientation of one’s body relative to other configurations in the environment, we can see that relationship is inherent in configuration perception. Relationship perceptions are configurations of configurations; It is easy to overlook that above, below, left of, right of, are all perceptions of the configuration of other configurations (objects) relative to one’s body. The function of the cerebellum was long thought to be limited to motor control because that is what is most observably affected by lesions, but for perhaps a couple of decades now the cerebellum has been well recognized to be instrumental in control of non-corporeal perceptions, including social relationships and the abstract configurations that we may be aware of as concepts. This is why the middle regions of the cerebellum have expanded in evolutionary time, more in the primates, and most of all in humans, while the head and tail of the cerebellum (which directly connect to the brainstem) retain their primitive motor control functions that we have in common with all vertebrates. (I have come across some clues but do not know much about the anatomy of the large cerebellum in cetecians and elephants and their deep engagement with sensory modalities other than the visual.)
A configuration is an invariant function of variable inputs, but the variation of those inputs can be controlled. The control is at lower levels, but the consequence is perceived as change at a postulated Transition level, a fifth order of perception above configurations. As Bill observed (B:CP Chapter 10), “Nearly any perception of the first three orders, in fact, may apparently be detected at fourth order as change.” (I suspect that his “nearly” was a hedge rather than an assertion; he offers no examples of perceptions which cannot be perceived to change. I know of none, but my ignorance merits no authority.) This skipping of levels is one of a number of violations of the tidy notion of each level setting references for the level immediately below.
Change is a relationship between current input and immediately preceding input. Is that preceding input stored in short-term memory? What is short-term memory but a signal which is persisted and the persisting of it diminishes (it ‘decays’)? I have some speculation as to the mechanism for persisting a signal for periodic comparison with current input, but I am already far out of scope for this thread. It is probably effected by a mechanism related to the observation that invariant input ceases to be experienced.
The lower levels up to the Configuration, Transition, and Relationship levels involve analog variables. From there up, perceptual signals have been said to be ‘digital’, that is, not , not gradient scalar variables; the perceptual input function either transmits a signal to the comparator or it does not. Instead of attributing this categorical boundary-making to the input functions, Bill postulated a Category level. Perceptions at any level above or below can be categorized (another ‘next level’ violation). Categorization is a quintessential property of associative memory, and probably an emergent property (i.e. due to reorganization). The clustering of associative links is analogous to the clustering of vectors in an LLM. The clustering in memory is hierarchically organized. Every postulated level of perceptual control above can be modeled as associative memory providing reference signals to the lower levels so as to experience the constellation of perceptions that is experienced as reconstructing the memory. Thanks to Loftus and now others, we have a better understanding of how memory is reconstructed, not retrieved. This understanding challenges the postulated distinction between memory and imagination. The ‘imagination switch’ construct is only needed in the lower-level control loops, and I have come to doubt that it is needed there.
My understanding of this began to get clear with my investigation of sequence control and the changing of habits which I reported at the conference in Manchester. A sequence moves to the next step when the current step produces the perception which is associated with initiating the next step. If there is more than one potential next step, which is activated depends upon the perception brought under control by the current step, and voilá! a choice point, and the postulated Program level. Just because it can be expressed using the symbolism of programming languages (derived from mathematical logic), and even if that programming code is compiled as a simulation which replicates experimentally measured behavioral I/O quantities and therefore is accounted as a good model, that does not qualify that notation or computer program as an indicator of how the brain is structured.
The Manchester conference was also where I learned from Frans Plooij about the probable role of the cerebellum in cognitive development after month week 70 or 80. Cerebellum means ‘little brain’, etymologically, but metabrain might be closer to the mark.
Bringing this discursus back into the current scope, an AI agent has no corporeal basis for the superstructure of configuration perceptions which for us is built up on analogy to configurations of the body. Then bringing this discursive thread back to the topic, no model has explained the difference between perceptual signals and the experience of perceptions (primary, anoetic, or phenomenal consciousness of qualia). Presuming that fundamental phenomenon, experience, the capacity to maintain units of experience where they can be associated together, operated upon, reported, and potentially shared across widely distributed systems (secondary, noetic, or access consciousness) follows directly from a model in which associative memory bears a lot of the explanatory burden; as likewise does the capacity to simulate imagined hypothetical experiences within an imagined past or future environment (tertiary or autonoetic consciousness). We’ve already touched on how the distinct phenomenon of self-awareness arises from the perception of being perceived by another and imagining what they perceive. All the psychiatric apparatus about personality development incorporating the examples and injunctions of parents and other esteemed ‘role models’ elaborate on this (where ‘esteem’ ranges from admiration through respect to fear), and also attempts to understand trauma, Stockholm syndrome, etc.
A metascience comment: There is a clear pattern in history of science where advocates of a revolutionary view adopt an “eclipsing stance” toward their forebears, a direct effect of exploring how completely explanatory one’s theory is. It would take awareness and conscious control to avoid it. PCT has been no exception. PCT’s eclipsing stance toward behaviorism functioned at times as a badge or shibboleth of membership, and seems to have led to neglect of ways in which disturbances may influence reference values stored in memory and the reorganization of the hierarchy. In respect to the higher-level perceptions that most concern us in life, reorganization is also carried out in hierarchically structured associative memory, according to the above reframing of BIll’s hypotheses .