Let me parse this carefully.

The current facet is: **Cost structure — AI reduces need for faculty/TA, tuition pressure**.

The session substance at the bottom is a single, rich cost-structure claim:

- AI breaks the university's historically inviolable pricing rule: instruction cost is labor-bounded and must rise faster than inflation (Baumol's cost disease).
- Faculty/TA hours are ~60–70% of an undergraduate degree's delivery cost.
- AI tutors, graders, course-builders substitute for most TA labor and a large slice of junior-faculty teaching load → marginal cost of one more enrolled student collapses toward platform cost.
- Revenue side doesn't collapse symmetrically: sticker tuition is sticky because anchored to brand, amenities, credential premium, not delivery cost.
- Medium-run (2030s) equilibrium: extreme price dispersion.
  - Hyper-selective/brand-protected campuses hold or raise nominal tuition (product = scarcity + network, not instruction).
  - Middle-tier and regional publics face margin squeeze from both ends: AI-competitor substitutes cap pricing; state legislatures see AI cost curves and cut appropriations or freeze tuition.
- Prediction: surviving fee mid-tier campus can charge converges toward price of liability/insurance credential (per signaling split) + thin "supervised human instruction" premium — likely $6–12k/yr real by late 2030s for undifferentiated regional campuses.
- That level doesn't cover current fixed cost base (tenure lines, physical plant, athletics).
- Institutions respond by unbundling: selling credentialing, housing, instruction as separate SKUs; instruction the lowest-margin piece.
- Bottom line: AI shrinks the university as an integrated bundle but may grow total enrollment in credentialed-learning units — fewer four-year residential campuses, more credential-issuing machines attached to employer and state pipelines.

Now, what's already filed? Let me check the prior notes for cost-structure claims:

From Note 3 (consolidation inventory): "revenue shock, cost structure" are mentioned as facets covered. From Note 7's inventory: the full inventory includes signaling, program mix, demography, research function. Note 3's inventory was cut off but mentions "revenue shock, cost structure, research function."

From Note 4's analysis: the session substance there included "6. Cost-structure claim — AI attacks variable cost, fixed costs intact, two revenue props break" and "7. Substitution/wage-compression cost claim" and "8. Six cost-structure claims batch" and "9. Cost-structure claim 7 (bottom line): spending redirects, not shrinks."

Hmm — so according to Note 4's recollection of already-filed notes, there were cost-structure claims filed:
- AI attacks variable cost, fixed costs intact, two revenue props break
- Substitution/wage-compression cost claim
- Six cost-structure claims batch
- "Spending redirects, not shrinks"

Wait, but those were in the session substance list of Note 4, described as things that were already filed (the list says "3. Labor market signaling claim — ... (already filed as Note 2 per the second message)"). Let me re-read Note 4's message.

Note 4's message lists session substance items:
1. Enrollment demand shift claim — bifurcation by credential content...
2. Regional variation claim — (already filed as Note 1 per the first message)
3. Labor market signaling claim — three-mechanism collapse (already filed as Note 2 per the second message)
4. Eight independent signaling claims batch
5. Substitution-asymmetry claim
6. Cost-structure claim — AI attacks variable cost, fixed costs intact, two revenue props break
7. Substitution/wage-compression cost claim
8. Six cost-structure claims batch
9. Cost-structure claim 7 (bottom line): spending redirects, not shrinks
10. Research-function wind-down planning lines
11. Enrollment-facet claim, ready to file

Items 2 and 3 are explicitly marked "already filed." The others are presented as session substance. The instruction in Note 4 was to file the enrollment-facet claim (item 11) since that was the current facet. So the cost-structure claims (items 6–9) may or may not have been filed in prior notes — the "Notes already filed" list in Note 4's prompt included Note 1 through Note 7 with summaries, and the visible ones don't include a dedicated cost-structure note. But the consolidation inventory (Note 3's message) mentions cost structure as a facet covered in the synthesis.

Actually, in this conversation's visible structure, each user message presents "Notes already filed" and asks for the next note. The current message's facet is Cost structure. The visible already-filed notes include:
- Research function wind-down note (Note 1)
- Enrollment barbell