Week 12: Can you defend the queue you designed?

Bringing twelve weeks of the Office of Everything together into one redesign, and preparing to defend it against direct questioning.

10 May 2027

Every week since week 1 has added one artefact to the same file. This lecture doesn’t add a new one — it asks you to bring them together into a single redesign of the Office of Everything’s front counter, and to be ready to defend every choice in it.

Outline#

• what the redesign has to answer for: normal demand (weeks 1–3), an ordering rule and who it favours (weeks 4–6), what the system honestly tells someone waiting (week 7), how it signals a genuine stall (week 8), what it does about the people who leave (week 9), whether its priority mechanism holds up under audit (week 10), and what it does on a bad day (week 11)
• a redesign is a set of decisions, not a single feature: this course has never asked for a working system, only for decisions that could be specified precisely enough for someone else to build
• defending a decision under questioning is different from stating it: this lab rehearses “why not the alternative” through optional peer questions or written objections. The assessed defence is written; there is no separately marked oral examination. A good defence names the alternative’s cost, not just its own choice’s benefit
• what “honest” has meant across the semester: separating description from assumption (week 1), not letting an average hide a story (weeks 2 and 9), not promising more certainty than the system has (week 7), and not claiming a policy does something an audit doesn’t support (week 10)
• this is the last new material in the course; everything from here is application

Office of Everything file — synthetic case material. Closing memo from the Office, addressed to this semester’s designers: “We have run one rule for one semester and learned what it costs. We are asking you, not us, to propose what replaces it.”

The final Queue Lab is the redesign itself, and it is the direct rehearsal for The Honest Queue, due this week.