A Balance Sheet Can Balance and Still Be Completely Wrong
Three examples from building Sales Scribe show why balanced figures can still be wrong, and what those failures taught us about correctness.
SALES SCRIBE
Design notes
The decisions, trade-offs and lessons behind Sales Scribe.
Reading Finds Candidates. Running Finds Facts.
How running Sales Scribe exposed defects that code reading and passing tests missed, and what that means for reviews carried out with AI.
When a bulk action meets a closed month
Why bulk issue refuses locked-period invoices, even for the owner, and reports the outcome for each document.
A retention floor you can prove in four lines
How a single date constant in our data-retention rule turned out to fall short of three of the four regimes it was meant to satisfy, and why we fixed it with a cruder rule rather than a cleverer one.