Review questions
Integrated summary: Framing Problems and Decisions
Good decision-making begins before choosing a tool. The first question is what we are trying to understand or choose, and what was reasonably available at the time. That is why this subject separates decision-process quality from outcome quality. A reasonable process can be followed by a bad outcome because uncertainty remains, while a weak process can receive a good outcome by luck. Outcomes matter because they add evidence, but they do not erase what was known or unknown at the time. A short decision record preserves the decision, desired state, alternatives, evidence, assumptions and uncertainty, rationale and review trigger, making later learning less vulnerable to hindsight.
Next comes problem framing. “We need a new system” jumps to an intervention before defining the gap. A stronger frame states the current condition, desired condition, scope, constraints and affected stakeholders. In the teaching case, rework in web and email requests rose from 8% to 17% over six weeks, with a goal of 10% or less while preserving response time. That is a testable gap. Saying “employees are slow” instead assumes a cause about people without evidence. A new platform, training or process change may later become alternatives, but they do not belong in the problem statement as facts.
Initial scope does not have to include everything. Start where the signal appears and define clear expansion triggers. If the rise appears only in web and email, those channels can be investigated first while phone remains temporarily outside scope; broaden the inquiry if a similar pattern or shared cause appears. The desired state describes improvement, not a solution name: “rework at 10% or less while preserving response time” is an outcome; “buy a platform” is a possible intervention.
Then examine information quality. In another case, 420 requests arrived in one month and 84 were after hours; 84÷420=20%. That is a valid historical observation within the month and measurement definition, but it does not mean next quarter will also be 20%, that every evening request is urgent, or that extended hours are the best choice. “The share will remain 20%” is an assumption; an 18-person survey is an observation from a small sample; and the effect of extended hours on satisfaction is unknown until measured. Labeling observations, estimates, assumptions and unknowns prevents evidence from being given more strength than it deserves.
Uncertainty does not require paralysis. Use ranges, scenarios or clear descriptions of limits. Seek additional information when there is a reasonable chance that it will change the choice, safeguard or timing, and when collection cost and time are proportionate to the importance of the decision. If the same choice remains suitable across a reasonable range, extra precision may have little value. If a small change flips the choice, the information is decision-sensitive and deserves more attention.
Finally, do not confuse a symptom with a cause. A rise in no-shows from 9% to 16% is a symptom. “The reminder redesign caused the rise” is a causal hypothesis, as are longer booking lead time, a changed customer mix, or more evening appointments. A useful hypothesis states what we would expect to observe if it were true and what would weaken it. In the case, when appointments were split by lead time, no-show rates were 10% then 11% for 1–7 days, and 15% then 16% for 8–14 days. The within-band rise is one percentage point, while the lead-time bands differ more. This weakens “message design alone” and makes lead time worth stronger investigation, but it does not prove a single cause.
Cause-and-effect diagrams and repeated “why?” questions generate hypotheses; they do not prove them. Comparison, measurement and proportionate small checks increase or decrease confidence. If evening errors rise among the same employees who also work mornings, while the validation system slows in the evening, the training-difference hypothesis weakens and the system-condition hypothesis strengthens, while further verification is still needed. The four lessons therefore connect as one process: preserve decision logic, frame the gap without jumping to a solution, weigh information with its limits, and move from symptoms to testable hypotheses before selecting a remedy.
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