
One of the most useful questions raised in recent Model L discussion is also one of the most disconcerting. An LII is assigned 2D / 3P to Se(T.) Actuation, the Model L mode concerned with regulatory force and shaping the physical environment. For someone who knows LII through Model A, that can sound implausible. LII's familiar Se position is Vulnerable: weak, unvalued, and hardly a natural object of priority. Why, then, does Actuation receive 3P?
The short answer is that Model L is not saying that an LII broadly values forcefulness more than it values sensation, nor that an LII is secretly strong at Se. It is assigning a priority to one radial sub-element, using distinctions that Model A does not contain. Whether that assignment is psychologically persuasive is a further question. But we can make the reasoning clear before deciding whether we accept it.
Start with the apparent contradiction
Model A's eight functions remain present in Model L's A and D capacities. For LII, the Model A Vulnerable position corresponds to Se(F.) Impetus at D2: 1D / 1P. That is the familiar weak point.
Actuation, Se(T.), is not D2. It is LII's B2 Collaborative position, one of the eight radial positions introduced by the sixteen-element model. Its published value is 2D / 3P. The shared Se label marks a common parent territory; it does not make Actuation and Impetus one function with two incompatible scores.
This distinction prevents a simple contradiction, but it does not make the number self-evident. The real question becomes narrower: why should this particular mode of Drive, at this particular radial coordinate, have higher priority than its dimensionality?
Jared Vaughan's useful starting point
Jared Vaughan proposed a way of reading the familiar Model A values as scores assembled from traits rather than as eight bare facts:
- Dimensionality = 1 for being present + 1 if Bold + 2 if Strong.
- Priority = 1 for being present + 1 if Bold + 2 if Valued.
For the ordinary eight positions this is elegant. A Leading function is strong, valued, and Bold, yielding 4D / 4P. A Vulnerable function is weak, unvalued, and Cautious, yielding 1D / 1P. A Suggestive function is weak and Cautious but valued, yielding 1D / 3P.
| Model A position | D | P | What the scores distinguish |
|---|---|---|---|
| Leading | 4 | 4 | Strong, valued, Bold |
| Creative | 3 | 3 | Strong, valued, Cautious |
| Role | 2 | 2 | Weak, unvalued, Bold |
| Vulnerable | 1 | 1 | Weak, unvalued, Cautious |
| Suggestive | 1 | 3 | Weak, valued, Cautious |
| Mobilising | 2 | 4 | Weak, valued, Bold |
| Ignoring | 3 | 1 | Strong, unvalued, Cautious |
| Demonstrative | 4 | 2 | Strong, unvalued, Bold |
That proposal exposes the radial puzzle. If Boldness supplies the one-point term in both scores, LII's radial B2 Actuation looks like it should have 2P, while B4 Observation looks like it should have 3P. The published table gives the reverse: B2 is 2D / 3P and B4 is 3D / 2P.

Why Model L cannot be reduced to Bold/Cautious and Valued/Unvalued
It is tempting to treat the radial positions as Model A positions with extra labels attached. That temptation is the source of much of the confusion. Model L has central and radial positions, foreground and background positions, facile and resistant positions, four capacities, and several tetrachotomies. These are overlapping coordinate systems, not aliases for the same two Model A dichotomies.
The relevant tetrachotomy here is Interest. It crosses two distinctions:
| Interest group | Focal Concentration | Attentional Concern | Positions |
|---|---|---|---|
| Salient | Bold | Pertinent | A1, A4, D1, D4 |
| Tangential | Discreet | Incidental | A2, A3, D2, D3 |
| Adjunct | Bold | Incidental | B1, B4, C1, C4 |
| Germaine | Discreet | Pertinent | B2, B3, C2, C3 |
On the central positions, Bold aligns with Pertinent and Discreet aligns with Incidental. Model A therefore has no need to separate them: either term produces the same result there. On the radial positions they split apart. B2 is Germaine: Discreet but Pertinent. B4 is Adjunct: Bold but Incidental.
The proposed reading of 3P
The proposal is not that every priority score should use Boldness. More precisely, each score begins with one point for existence: the element has a coordinate in the model. The term that had been called a “value contribution” is better named the Current contribution.
- Dimensionality = 1 for existence + 1 if Focal Concentration is Bold (0 if Discreet) + a Capacity contribution of 0, 1, or 2.
- Priority = 1 for existence + 1 if Attentional Concern is Pertinent (0 if Incidental) + a Current contribution of 0, 1, or 2.
Capacity is Model L's four-region expansion of the old Strong / Weak contrast. It supplies the dimensionality baseline:
| Capacity | Positions | Dimensionality contribution |
|---|---|---|
| Preeminent | A1–A4 | 2 |
| Auxiliary | B1–B4 | 1 |
| Contributive | C1–C4 | 1 |
| Inferior | D1–D4 | 0 |
Focal Concentration then separates the two levels within every capacity: Bold positions take the higher dimensionality score and Discreet positions the lower one. In A this gives 4D or 3D; in B and C, 3D or 2D; and in D, 2D or 1D. The radial B and C capacities are the mixed middle regions: neither has the full Preeminent baseline nor the zero Inferior baseline.
Current is Model L's expansion of the Model A Valued / Unvalued contrast. It crosses Functional Alignment (Favoured / Menial) with Directional Polarity (Prevalent / Subdued):
| Current group | Alignment | Polarity | Priority contribution |
|---|---|---|---|
| Primary | Favoured | Prevalent | 2 |
| Ancillary | Menial | Subdued | 0 |
| Complementary | Favoured | Subdued | 1 |
| Supplementary | Menial | Prevalent | 1 |
Functional Alignment asks whether a position serves the type's favoured metabolic direction or carries work that is more menial: useful, perhaps necessary, but not naturally selected as an end. Directional Polarity asks whether that position is prevalent in the pattern or subdued within it. Model A's central positions combine these two signals at the extremes: Primary is favoured and prevalent; Ancillary is menial and subdued.
The radial positions are where the signals cross. Complementary is favoured but subdued: it belongs to the preferred current, though it does not stand forward. Supplementary is menial but prevalent: it is exposed and usable in the pattern, yet serves work the type would not choose for its own sake. Neither is simply “valued” or “unvalued”. Each is mixed, and that mixed status produces the middle Current contribution of one point.
This is why Current must come before the LII puzzle, not after it. LII's B2 Actuation belongs to the Complementary current; LII's B4 Observation belongs to the Supplementary current. They differ in what kind of mixed current they belong to, but neither receives a higher Current score: both receive +1. Current therefore establishes the shared radial baseline. It does not explain the final 3P versus 2P difference.
That final difference comes from Interest. B2 is Germaine, hence Pertinent, adding one more point. B4 is Adjunct, hence Incidental, adding none. Put together: Actuation is 1 for existence + 1 for a Complementary Current + 1 for Pertinent concern; Observation is 1 for existence + 1 for a Supplementary Current + 0 for Incidental concern.
Capacity and Current are therefore the two regional baselines: one for dimensionality, one for priority. Interest supplies the final one-point adjustment to each. Thus the radial calculation is not “a little bit present”; all sixteen elements exist in Model L. It is a rule for assigning dimensionality and priority to their different coordinates.
For LII's two relevant positions, the calculation is:
| Position | Capacity | Current | Interest | Dimensionality | Priority |
|---|---|---|---|---|---|
| B2 Actuation | Auxiliary: +1 | Complementary: +1 | Germaine: Discreet, Pertinent | 1 existence + 1 Auxiliary + 0 Discreet = 2D | 1 existence + 1 Complementary + 1 Pertinent = 3P |
| B4 Observation | Auxiliary: +1 | Supplementary: +1 | Adjunct: Bold, Incidental | 1 existence + 1 Auxiliary + 1 Bold = 3D | 1 existence + 1 Supplementary + 0 Incidental = 2P |
On this reading, the difference is not a verdict that LII values Drive over Sensation. B2 Actuation is Complementary and B4 Observation is Supplementary, so both receive the same one-point Current contribution. The difference comes from Attentional Concern: Actuation is placed in a Pertinent position and Observation in an Incidental one. Conversely, Observation is more dimensionally available because B4 is Bold while B2 is Discreet.
Demand is the practical meaning of the puzzle
Model L already has a name for the gap between these two scores: demand, defined as priority minus dimensionality. Positive demand means that a position matters more than the type can readily supply on its own; negative demand means that the type has more available facility than it naturally calls for.
| Demand | Positions |
|---|---|
| +2 | D3 Suggestive, D4 Mobilising |
| +1 | B2 Collaborative, B3 Compensatory, C2 Negligent, C3 Prompting |
| 0 | A1 Leading, A2 Creative, D1 Role, D2 Vulnerable |
| −1 | B1 Correspondent, B4 Instrumental, C1 Subsidiary, C4 Galvanising |
| −2 | A3 Ignoring, A4 Demonstrative |
The central octet therefore occupies −2, 0, and +2 only. The radial octet occupies −1 and +1 only: the intermediate demand values that the eight-position model has no place to express. This does not establish why the published table was historically chosen, but it is a direct consequence of that table and Model L's own definition of demand.
LII's B2 Actuation has +1 demand: 3P minus 2D. It is a position that asks for more attention or support than its own facility comfortably provides. B4 Observation has −1 demand: 2P minus 3D. It is more available as a resource than it is likely to be treated as a central concern.
This is why the radial difference is not a decorative swap between two and three. In Jared's original symmetric reconstruction, the same Boldness term enters both scores; at radial positions, its strength and value terms each contribute one point. Every radial position would therefore have equal dimensionality and priority: zero demand throughout the radial octet. Translated into Model L terms, that collapses the radial positions onto a demand value Model A already has. The published pattern instead preserves a deliberate alternation between positive and negative demand. Current gives the shared radial baseline; Interest explains which positions ask more than they can readily supply.

The Presence Cube and the sixteen-element question
This is where the language needs care. The Presence Cube is an eight-vertex diagram of the familiar Model A positions and their four levels. Model L says there are sixteen elements, not eight elements with eight decorative duplicates. A cube therefore cannot, by itself, be a complete spatial map of all sixteen Model L elements.
Under the scoring proposal, every radial position has a mean level of 2.5: it falls between the cube's second and third levels, rather than at one of its vertices. That makes the cube a useful projection of the central octet, with the radial octet gathered at its centre in this particular visualisation. It does not prove that a tesseract is unnecessary. If the aim is a geometry that gives all sixteen elements their own equally explicit positions, a tesseract or another sixteen-point construction is the more natural question.

What this explanation does and does not achieve
It achieves a formal explanation. The published 3P no longer clashes directly with LII's 1P Vulnerable function, because it concerns another sub-element at another coordinate. It also explains why Jared's original formula works perfectly for Model A yet changes result on the radial octet: Model A cannot distinguish Focal Concentration from Attentional Concern because the two always coincide in its eight positions.
It does not by itself establish that an LII experiences Actuation as pertinent. That is the empirical and interpretative burden of the model. If LII practitioners find the B2 description alien, or consistently find B4 Observation more insistent than B2 Actuation, then the coordinate assignment needs scrutiny. A clean arithmetic reconstruction is useful; it is not a substitute for psychological evidence.
That is also why the wider Model L tetrachotomies matter. They should not be treated as decorations added after Bold/Cautious and Valued/Unvalued have done all the explanatory work. Interest introduces a distinction about concern; other tetrachotomies organise the sixteen positions in still other ways. The radial priority question is precisely where those extra structures begin to make a difference.
A fair conclusion
Jared's proposal gives us the right question: what supplies the one-point term in priority? The radial table gives a possible answer: not Focal Concentration, but Attentional Concern. That makes LII's 3P Actuation intelligible as a coordinate claim, rather than as a claim that an LII loves or excels at force.
Whether that coordinate claim is true remains open to experience, comparison, and criticism. The LII case is not an embarrassment to hide. It is the best place to test whether the distinction earns its keep.