A vague problem leads to vague solutions. The Is/Is-Not methodA technique that defines the exact boundaries of a problem by asking what, where, when, how much and who, and answering each question with what the problem is and what it is not. Click term for full definition draws a precise boundary around your problem by asking where it happens and, just as important, where it does not. Watch the short video, then work with the toolkit PDF: it explains the method, shows a worked example and gives you a blank template to fill in.
Tool video
The short tool video will appear here.
Is/Is-Not Method in short
- Draw the table. Five rows (What, Where, When, How much, Who) and two columns (Is, Is Not).
- Fill in the Is column. Describe precisely where, when and how the problem shows up.
- Fill in the Is Not column. For each row, name similar objects, places or times where the problem could occur but does not.
- Look for differences. Ask: what is special about the Is side compared to the Is Not side?
- Write the problem statement. Summarize the Is column in one or two sentences.
Key points
- Five questions, two answers each: Is and Is Not.
- The Is Not column narrows the scope and points to causes.
- Use facts, not assumptions.
- End with a precise problem statement.