Everything hangs off the edition
A festival's data is a sequence of past states, not a current one. The pivot, the per-year overrides, and the two switches that close a submission.
Documentation that shows the holes
A workflow that lives in data has no readable form. A hand-drawn diagram is wrong in a month. Generate it — and make it report what has no path.
Class 1 is assets, except where it is liabilities
Every accounting tutorial hard-codes class one as assets. Under SYSCOHADA it is liabilities. What has to become data when the standard is a variable.
Most account deletions are a mistake
A delay, two typed confirmations, counted losses, and a memory of what was published. The details that decide whether erasure destroys the right thing.
The third verdict — rules that check without deciding
Two verdicts force a system to call missing data a failure. The third one — to be checked — is what separates a decision aid from an automatic rejection.
A foreign key we deliberately did not create
Referencing by code instead of by FK buys real decoupling and costs a guarantee. An incident, its two faults, and why the second one was worse.