Worked micro-case
Prompt: A regional coffee chain’s profit is down 20%. What should it do?
Clarified question: What caused the decline, and which actions can restore profit within twelve months without closing healthy stores?
Issue tree: Revenue—price, transactions, mix. Cost—labor, ingredients, rent, overhead. External factors—competition, demand, regulation.
Initial hypothesis: Lower weekday transactions caused most of the decline.
Finding: Transactions fell only 3%; ingredient and overtime costs explain most of the decline.
Updated answer: Restore profit through procurement and scheduling changes, not a broad discount campaign.
Thirty-second final pyramid
Recommendation: Renegotiate the two largest ingredient contracts and redesign store scheduling.
Reasons: These two costs explain most of the profit decline; customer demand remains broadly stable; implementation is faster and less risky than closing stores.
Risk and next step: Confirm vendor alternatives and pilot the schedule in ten stores before full rollout.
Step 1: clarify the decision
Restate what the client must decide. Confirm success measure, time horizon, geography, customer, product, and constraints. A prompt such as “profits are falling” becomes actionable only after defining which business, period, and desired outcome.
Step 2: build the issue tree
Choose a structure that decomposes the decision. For profit, use revenue and cost and then operational drivers. For market entry, use market attractiveness, ability to win, economics, entry mode, and risk. Explain why each branch matters.
Step 3: prioritize
State where to begin and why. Prioritization can depend on likely impact, uncertainty, ease of testing, or logical dependency. An issue tree that treats every branch equally is a taxonomy, not a work plan.
Step 4: analyze evidence
Read exhibits carefully. Confirm title, source, units, axes, definitions, and time. Calculate with visible formulas and units. After each result, state the insight and implication for the working hypothesis.
Step 5: update
New evidence can change the structure and answer. Restate the updated hypothesis. Don't return mechanically to the opening framework if the case has moved elsewhere.
Step 6: synthesize
Use answer-first structure:
- recommendation;
- two or three supporting reasons;
- quantitative evidence;
- major risk;
- next step.
Worked micro-case
A coffee chain’s profit fell 20%. The initial issue tree separates revenue and cost. Data shows transactions declined only slightly while ingredient and overtime expense rose sharply. The hypothesis changes from demand weakness to cost execution. The recommendation becomes renegotiating major ingredients and redesigning scheduling, with a limited store pilot before rollout.
The important skill isn't guessing “cost” at the start. It is building a structure that can reveal the driver and updating when the evidence arrives.
Interviewer collaboration
Listen to prompts and hints. Ask concise clarification. When the interviewer redirects the discussion, incorporate the information. Collaboration isn't dependence; it is the operating model of the case.