One person, many intelligences
Wilber's second great move, after the four quadrants, was to refuse the single-axis model of development. People are not at one level. They are at many levels — one for each line of intelligence they have cultivated, neglected, or never been invited into.
A CFO can be at a magnificent cognitive altitude and at the moral altitude of a wounded teenager. A monk can be at extraordinary spiritual altitude and unable to talk to their own brother. The pattern is the norm, not the exception.
The lines worth tracking
AQUAL identifies, at minimum, six lines worth tracking: cognitive (what you can think about), emotional (what you can feel), moral (whose suffering counts), interpersonal (how you do we), somatic (what your body knows), and spiritual (how wide your we can become).
The point of naming them is not to grade. It is to stop confusing a high score in one for a high score in all — which is the single most common error in leadership development and the single most expensive one in hiring.
A person is a chord, not a note.
What this means for the wheel
The Lifewheel's eight petals are downstream of the lines. Each petal calls on a different mix: Spiritual Connection leans on the spiritual line, Relationships leans on the interpersonal, Mental Clarity leans on the cognitive. If a petal is small, ask which line it is starved of — not which book to buy.