# Analysis Framework

## Primary Model

Use MBTI as a preference model with four primary axes:

- Extraversion / Introversion
- Sensing / Intuition
- Thinking / Feeling
- Judging / Perceiving

These four axes are the main decision layer.

Interpret them in the Myers sense:

- `S/N` is about the preferred way of perceiving: actualities and what is present to the senses vs possibilities, patterns, and associations.
- `T/F` is about the preferred way of judging: impersonal logical analysis vs personal or interpersonal valuing.
- `E/I` is about whether perception and judgment are more naturally invested in the outer world or the inner world.
- `J/P` is about the preferred attitude for dealing with the **outer world**, not a generic synonym for "organized" or "messy".

## Best-Fit Principle

The final type is a **best-fit hypothesis** built from evidence, not a definitive truth.

Implications:

- low evidence means low confidence
- balanced evidence means present multiple candidate types
- conflicting evidence must stay visible in the result

## Type Dynamics

Use type dynamics only after the four-axis pass:

1. build provisional four-letter candidates
2. compare the top candidates
3. use function hints to check whether the result is behaviorally coherent

Do not start from functions and force a four-letter result when evidence is thin.

## Myers Rule For JP

Myers's key rule:

- for extraverts, `J/P` reflects the **dominant** process in the outer world
- for introverts, `J/P` reflects the **auxiliary** process in the outer world

Implications:

- outward evidence from an extravert more often shows the dominant directly
- outward evidence from an introvert may show the auxiliary more clearly than the dominant
- do not infer an introvert's dominant process straight from surface external behavior

This is the main reason functions must remain a validation layer rather than the primary classifier.

## Cognitive Functions As Validation

Allowed validation hints:

- `Ne`: divergent ideation, topic hopping, possibilities
- `Ni`: deep pattern synthesis, trend framing, essence-seeking
- `Se`: immediate action, present-moment responsiveness
- `Si`: experience recall, consistency, detailed precedent
- `Te`: execution, external structure, optimization, decision closure
- `Ti`: internal logic, definitional precision, contradiction spotting
- `Fe`: social calibration, collective impact, interpersonal harmony
- `Fi`: values, inner meaning, authenticity, personal conviction

Use these only to:

- explain why a candidate type fits
- distinguish adjacent candidates
- justify follow-up questions

Do not use function hints to overturn a stronger four-axis preference result.

## Evidence Order

When evidence conflicts, prefer:

1. repeated cross-source behavioral patterns
2. self-descriptions anchored in actual choices
3. decision-making language under constraints
4. message statistics and surface language markers

Statistics alone should never settle a dimension.