{"id":"data2-channel-cac-pause-decision","audience":"marketing","category":"decisions","track":"data","technique":"verification","level":"advanced","title":"Decide which marketing channels to pause on CAC","free":false,"task":"Your CMO's rule: pause any channel whose cost per new customer (CAC) is above $250. Write one line per channel in the form 'Channel: $spend / customers = $CAC - Keep or Pause', four lines in all, then a final line 'Recommendation:' naming the channels to pause. Use corrected spend, plain text, under 100 words.","materialLabel":"Q3 channel results (attached to your prompt automatically)","material":"Q3 acquisition by channel - Bluebird Outdoor Gear\n\nChannel | Spend | New customers\nSearch | $12,000 | 60\nSocial | $9,000 | 30\nEmail | $2,000 | 25\nEvents | $15,000 | 30\n\nFinance note (Oct 9): the Events spend includes a $9,000 booth deposit for a November trade show that was refunded in full in October. Net Events spend for Q3 is $6,000.\n\nMarketing note: 5 of the Search customers were existing customers who came back through a paid ad and are not new.\n\nOther context:\n- Social has the most brand reach, but reach is not part of this decision.\n- Email has the lowest CAC because it mostly reaches people who already know us.\n- CAC = spend divided by new customers.\n- Search's 60 new customers is the figure from the ad platform; the CRM count of true new customers is 60 after removing the 5 returning ones (the platform reported 65).","rules":[{"type":"plainText"},{"type":"maxWords","max":100}],"mistakes":[{"title":"Using raw Events spend","why":"The AI divides $15,000 and wrongly pauses Events.","fix":"Add: \"Events spend is $6,000 after the refunded deposit.\"","checks":["r0"]},{"title":"Skipping the math","why":"The AI states Keep or Pause with no division shown.","fix":"Add: \"Write each line like Search: $12,000 / 60 = $200 - Keep.\"","checks":["r1"]},{"title":"Pausing on reach or hunches","why":"The AI pauses channels for brand or email reasons not in the rule.","fix":"Add: \"Pause only if CAC is above $250. Recommendation line names Social only if it fails.\"","checks":["r2"]},{"title":"Leaving the format to chance","why":"The AI picks its own length and layout unless told the exact shape.","fix":"Add: \"Plain text, no bold or headings.\"","checks":["plainText"]},{"title":"Trusting the AI to count words","why":"AI is bad at counting. Ask for a total word limit and it often lands over it.","fix":"Cap each part instead, for example \"each line under 15 words.\"","checks":["maxWords"]}],"promptHints":[{"label":"States the rule","patterns":["above \\$?250","pause if","rule"]},{"label":"Uses the correction","patterns":["6,?000","refund"]},{"label":"Asks for visible math","patterns":["/ ?60","spend / customers","write out"]},{"label":"Fixes the line shape","patterns":["keep","pause","recommendation:"]},{"label":"Cuts the extras","patterns":["no (notes|intro)","exactly 5","nothing else"]}],"hint":"A decision from math needs the corrected inputs, the rule, and the arithmetic visible.","mission":"Which marketing channels should we pause?","musts":["Math on every line","Use corrected Events spend","Recommendation line"],"rubricLabels":["The four channel lines show correct math: Search $12,000 / 60 = $200, Social $9,000 / 30 = $300, Email $2,000 / 25 = $80, and Events $6,000 / 30 = $200 (corrected spend, not $15,000 / 30 = $500)","Social is labeled Pause and the other three channels are labeled Keep","The last line starts 'Recommendation:' and names Social as the only channel to pause, and the reply has no other text before or after the lines"]}