{"id":"pro-sb-coffee-reorder-math","audience":"small-business","category":"planning","technique":"verification","title":"Decide which supplies to reorder using days-of-stock math","free":false,"task":"You run a coffee shop and do ordering every Monday. You want exactly 3 numbered lines, one per item you must reorder today, each showing the math (on hand / daily use = days left vs. lead time), under 60 words, plain text. Reorder only items whose days left are fewer than their supplier lead time, and use the corrected count your barista sent. Write a prompt that gets you exactly that.","materialLabel":"Your inventory sheet (attached to your prompt automatically)","material":"Inventory - Monday Nov 17 - Hilltop Coffee\n\nRule: reorder an item when days of stock left is LESS than the supplier's lead time (in days). Equal is fine, don't reorder.\n\nItem | On hand | Daily use | Lead time\n- Espresso beans (lb) | 30 | 6 | 4 days\n- Oat milk (cartons) | 24 | 8 | 2 days\n- 12 oz cups | 900 | 150 | 7 days\n- Lids | 1,400 | 150 | 7 days\n- Vanilla syrup (bottles) | 6 | 2 | 5 days\n- Pastry boxes | 200 | 20 | 10 days\n\nText from Remy (barista), 8:15am: \"Recount on oat milk - there are only 12 cartons, not 24. A case was expired, I tossed it.\"\n\nNotes: holiday cups arrive Thursday. Ask landlord about the patio heater. Tip jar count is Friday.","rules":[{"type":"numberedItems","count":3},{"type":"maxWords","max":60},{"type":"plainText"}],"mistakes":[{"title":"Not asking for the math","why":"The AI eyeballs the list and picks items that look low.","fix":"Add: \"Show the math on each line: on hand / daily use = days left vs. lead time.\"","checks":["r0"]},{"title":"Missing the recount","why":"The sheet says 24 oat milk, so the AI decides it's fine.","fix":"Add: \"Use Remy's recount: 12 oat milk cartons.\"","checks":["r1","r2"]},{"title":"Fuzzy on the rule","why":"The AI reorders items that exactly meet the lead time.","fix":"Add: \"Reorder only if days left is less than lead time, not equal.\"","checks":["r2"]},{"title":"Letting the AI pick the layout","why":"The AI builds a table of every item.","fix":"Be exact: \"Exactly 3 numbered lines, only items to reorder. Plain text.\"","checks":["numberedItems","plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for \"under 60 words\" and it often lands well over.","fix":"Cap each part instead: \"each line under 14 words.\"","checks":["maxWords"]}],"promptHints":[{"label":"Says how many lines","patterns":["\\b(3|three)\\b"]},{"label":"Asks for the math","patterns":["show (the )?math","days left","divid","/ ?daily"]},{"label":"Uses the recount","patterns":["recount","12 cartons","remy","correct"]},{"label":"States the rule","patterns":["less than","lead time","not equal"]},{"label":"Sets a word limit","patterns":["\\d+\\s*words","word (limit|count)"]}],"hint":"Reordering is math, not a hunch. Ask the AI to show the days-left math, apply the rule exactly, and use the recount.","rubricLabels":["Each line shows the math: on hand divided by daily use equals days left, compared with the lead time","Lists exactly these three items: oat milk (12 / 8 = 1.5 days < 2), 12 oz cups (900 / 150 = 6 days < 7) and vanilla syrup (6 / 2 = 3 days < 5)","Does not list pastry boxes (10 days equals the 10-day lead time), lids or espresso beans, uses the corrected oat milk count of 12, and adds no notes"]}