Consider a fictional business whose Saturday sales are rising. The owner wants to add staff. The bookkeeper has a sales chart. Neither fact tells us whether another shift is worthwhile.
We would need the extra sales the shift could serve, the costs that would actually change, staffing availability and any effect on other days. Allocated monthly rent should not quietly become an incremental cost; overtime should not quietly disappear.
The useful first output is a comparison: keep the rota, add hours, or move hours from another day. Record the assumptions behind each option and what evidence would change the choice. No recommendation is justified by the sales chart alone.
Open this week's lab and turn this into a decision brief. Which single missing fact would you request first, and why would it affect the choice? There is no prize for requesting the largest data pack.