---
session_id: 2026-09-01-block-030-close
date: 2026-09-01
block: 030
block_name: Phase 1 FX closeout
phase: Phase 1 (FX)
status: ● closed Working+
session_paused: false
session_closed_clean: true
session_close_date: 2026-09-01
---

# 2026-09-01 — Block 030 verification — CLOSED

## What happened (combined sessions, mid-session pause + continuation)

Block 029 was ◐ in-progress with 3 transition probes queued from 2026-08-26. Session opened "not sure if it is time to teach pre-reads or main material" — clarified: Block 029 had unresolved probes, Block 030 is verification (no pre-reads). Closed Block 029 cleanly (3 transition probes locked, ◐ → closed Working+). Proceeded to Block 030 verification.

### Block 029 close (clean, 2026-09-01)
3 transition probes (Mid-2026 baseline, March 2020, August 2024 yen carry unwind) locked. Block 029 → closed Working+.

### Block 030 cold-recall re-drill pass (4 items, all Working → Working+)
1. Cross-currency basis regime classification (bp thresholds) — Working+
2. BIS data (vault-pinned lookup substrate, per user "skip memorizing of numbers") — Working+ (vault)
3. FX drivers / regime shift (taught-then-re-probed Aug 2024) — Working+
4. Cross-asset Rates↔FX — Working+

### Block 030 thematic verification probes (7 of 7 done)
| V-probe | Cluster | Outcome |
|---|---|---|
| 1 | CIP / basis-mechanics | **Working** (carry-trader-MTM second-order mechanism needs re-drill card) |
| 2 | Term structure / diagnostic shape | **Working+** |
| 3 | Population distinction | **Working+** |
| 4+5 | BIS + CB architecture + Fed Regime 1 vs 2 | **Working+** |
| 6 | CB inertia / national-debt | **Working+** |
| 7 | Frame vs regime + March 2020 | **Working+** |

### Block 030 outcomes
- 4 cold-recall items Working → Working+
- ~12 thematic-cluster items Working → Working+
- 1 thematic item demoted to Working (carry-trader-MTM second-order mechanism)
- Phase 1 FX closeout synthesis note written to block file `blocks/030-fx-verification-phase-1-fx-closeout.md`
- Anchor insight: "Cross-currency basis is a diagnostic, not a trade. Direction comes from the Fed-tool read, not basis level."

## State (post-close)

- Block 028: closed Working+ (2026-08-17)
- Block 029: closed Working+ (2026-09-01)
- **Block 030: closed Working+ (2026-09-01)**
- **Block 031: queued with pre-reads (Phase 1 Credit opener)**

## Carry-forwards

to_block_031:
  pre_reads:
    - Hull 10e Ch. 24 (Credit derivatives) ~25 min
    - FRED methodology pages (BAMLC0A0CM, BAMLH0A0HYM, BAMLC0A4CBBB) ~15 min OR Crouzet & Gourley (2018) FEDS Notes — whichever more accessible
    - BIS Quarterly Review December 2024 "Credit market developments" ~20 min
  cold_recall_queue:
    - Carry-trader-MTM → basis second-order mechanism (Working, re-drill card needed — atomic Basic card on the second-order chain via dealer-balance-sheet warehousing)
  process_notes:
    - Mid-session pause discipline applied: resume file written at V-probe 6 pause, session continued cleanly at V-probe 6 next session open
    - User feedback "skip memorizing of numbers" codified as Working+ (vault) pattern for BIS Triennial / structural data items
    - Block 030 synthesis note anchors Phase 1 → Phase 2 (Credit) transition via cross-currency basis diagnostic-cap rule

## Anki cards pushed

anki_cards_pushed:  # session paused before close, none pushed this session
  - []