Day 175 Β· The after-action review

Week 25 Checkpoint: Debrief & Gap Closure

You will be able to
  • Debrief the Simulation II package against the rubric and rewrite the weakest deliverable properly
  • Drill the week's enterprise-delivery material with spaced recall until it retrieves cold
  • Sweep the interview error log from all drills (Days 28–174) and classify what remains open
  • Finalize the capstone punch list that drives the finale (Days 176–178)
Today's ~115 minutes
Spaced-rep: full due deck for Week 2515 min
Guided: rewrite the weakest deliverable25 min
Guided: closed-notes recall circuit20 min
Practice: error-log triage + punch-list freeze25 min
Commit checkpoint package15 min
Cumulative week quiz + card updates15 min

Builds on: Day 174 β€” FDE Simulation II Β· Day 168 β€” FDE Simulation I Β· Day 28 β€” The interview error log

The analogy

After every mission, good squadrons run the same ritual: What was supposed to happen? What actually happened? Why the gap? What do we change before the next flight? Rank comes off at the door β€” the point is not blame, it is that the same mistake never flies twice. The worst squadrons skip the debrief when the mission went "fine," which is exactly how fine slowly decays into failure.

Today is your after-action review for the whole week β€” and the launchpad for the final five days. Yesterday's simulation produced a self-grade with a weakest dimension; today you don't just note it, you REWRITE that deliverable until it would score a 4, because the rewrite (not the noticing) is where the skill change happens. Then the review-day machinery you know: spaced recall over the week's material β€” SSO flows, deployment models, the trade-off pentagon, triage frameworks, cost layers β€” pulled from memory before checking, because retrieval practice is what moves knowledge from "I read that" to "I can use that in a meeting." Last: walk the punch list into the finale with clear eyes.

Why this matters on the job

The debrief habit is itself a hireable skill: interviewers ask "tell me about a time you got feedback" and can hear within seconds whether you have a real revision practice or just nod at critiques. Practically, this is the last checkpoint before the finale β€” Days 176–178 execute the capstone punch list you freeze today, so an honest gap inventory now is the difference between a finale that hardens a real product and one that polishes the wrong things.

Guided practice

guided 1

Rewrite the weakest deliverable

25 min
  1. Open yesterday's 06-self-grade.md and confirm the weakest dimension (score ≀ 2).
  2. Write the target spec: three concrete properties the 4/4 version has. (Example, if objection handling was weakest: "answers all three of Priya's questions with verifiable specifics", "concedes the shared ACL risk and proposes the audit", "ends with a specific next step she controls".)
  3. Close the old file. Rewrite the deliverable from scratch in 07-rewrite.md β€” fresh prose, 25 minutes hard cap.
  4. Diff against the original. In three sentences at the bottom: what changed, and which HABIT caused the original weakness (rushed timebox? reassurance reflex? numbers without sources?). That habit line is the actual takeaway.
guided 2

Closed-notes recall circuit

20 min

Editor closed, six index cards (or six headings on paper), four minutes each β€” write everything you can retrieve, then check against Days 169–174 and mark gaps:

  1. Draw the OIDC auth-code flow and list the token checks; state what SCIM adds.
  2. The three deployment models table from memory: data, keys, updates, debugging, LLM path, support cost.
  3. The trade-off pentagon + the no-with-options formula, with one worked example from Wednesday.
  4. The triage framework + the LLM pipeline stages you bisect during forensics.
  5. Cost model from memory: three cost layers, three value currencies, why the ramp matters, pilot rule.
  6. The seven simulation rubric dimensions.

Scoring: a topic with β‰₯ 2 real gaps gets its flashcards re-drilled tonight and again on Day 179's warm-up.

On your own

Error-log triage and punch-list freeze

25 min

Two passes, no new work β€” decisions only.

Pass 1 β€” error log (Days 28 β†’ 174): every open entry becomes CLOSED (link the evidence: "hash-map complexity confusions β€” closed by D84 drill, 5/5 since"), DRILL (tag with its Day 179 station: DSA / ML rapid-fire / system design / behavioral), or ACCEPT (one written sentence of why). Target: a DRILL list of ≀ 12 items β€” that is what Day 179 can actually service.

Pass 2 β€” capstone punch list: merge open issues from your repo tracker, Day 161's cutover notes, Day 172's runbook gaps, and anything this week exposed (enterprise addendum promises the capstone doesn't keep yet?). Assign every item to D176 (hardening), D177 (gates), D178 (ship/docs), or WON'T-FIX with a reason. Constraints: D176's list must fit in ~75 minutes of work β€” cut until it does; a WON'T-FIX on anything security-adjacent needs a mitigating control noted, because Demo Day questions go there first.

Ship before you stop

Week 25 checkpoint package

Commit three artifacts: (1) 07-rewrite.md in the sim package with its diff notes and the habit line; (2) the triaged error log with every entry dispositioned and the ≀ 12-item DRILL list extracted to portfolio/interview-prep/drill-list.md; (3) docs/finale-punch-list.md in the capstone repo with every item day-assigned or reasoned WON'T-FIX. Take the cumulative week quiz. This package is small by design β€” today's value is decisions and one high-quality rewrite, not volume.

Rubric β€” check what you completed (0/5)

Common mistakes & misconceptions

  • Debriefing by re-reading instead of rewriting. Noticing a weakness changes nothing; regenerating the artifact is where encoding happens β€” the generation effect is the whole point of today.
  • Grading the rewrite against vibes. Write the three-property spec FIRST, then rewrite to it; otherwise "better" just means "longer."
  • A drill list of 40 items. Day 179 is one day; an honest 12 beats an aspirational 40 that guarantees shallow passes over everything.
  • Letting the punch list grow during the freeze. Today items get ASSIGNED or CUT, never added-and-vaguely-hoped; the finale has fixed capacity and Demo Day does not move.
  • Silent WON'T-FIXes on security items. Cutting is fine; cutting without a noted mitigating control hands Demo Day reviewers (and real security reviews) their first question.
  • Skipping the recall circuit because "I just did all this." Recognition decays in days; retrieval is what you'll have in the meeting. The circuit takes 20 minutes and is the cheapest insurance in the whole week.
Knowledge check

Q1. A customer's IdP-initiated login works, but a departed employee could still use the assistant for a week. Which mechanism was missing?

Q2. Mid-pilot, answer quality drops. Your deploy log is empty, but Wednesday saw a corpus ingest and the provider shipped a model update. Per Day 172's framework you check first:

Q3. Why does Day 175 make you REWRITE the weakest simulation deliverable instead of annotating it?

Go deeper β€” curated resources

articleFDE Interview Guide (Exponent) β€” rubric dimensions to grade against β†—15 mincourseGoogle Technical Writing β€” self-editing for the rewrite β†—20 minrepoTech Interview Handbook β€” planning the final prep week β†—15 min
If you have a third hour
  • Debrief culture β€” Read up on aviation/military debrief practice ("nameless and rankless") and write three sentences on how you'd run a blameless project debrief with a real customer team β€” it pairs with Day 158's postmortems.
Done means
  • Rewrite committed with diff notes and the causal habit named
  • All six recall topics attempted closed-notes; gaps marked for re-drill
  • DRILL list ≀ 12 items committed; punch list frozen with day assignments
  • Week quiz β‰₯ 2/3 with revisit days scheduled for misses
How this connects

← Back: This is Day 28's error log reaching its final full sweep, Day 168's rubric applied with a week more skill, and the same rewrite discipline Day 19 taught for bugs β€” every failure becomes a permanent upgrade.

Forward β†’: Days 176–178 execute the punch list you froze today, exactly as written. Day 179 drills the ≀ 12-item DRILL list, and Day 180's gap-analysis protocol is this day's method applied to the whole program.

Unlocks: D176 Capstone Hardening Β· D179 Interview Gym Β· D180 Demo Day