01

Describe the situation

Choose a person trying to accomplish something in a particular context. Focus on the task, constraints, and environment rather than inventing a biography that stands in for evidence.

02

Follow the friction

Ask what the person must notice, understand, remember, or physically do. A principle in a book becomes easier to examine when it is connected to one of those demands.

03

Consider who is missing

Question whether the example assumes a certain ability, language, device, or amount of prior knowledge. An attractive demonstration may leave important circumstances unexplored.

04

Turn the insight into a check

Write an observable question you could investigate with the relevant people. Avoid assuming that your own experience represents everyone else. Use the book to sharpen the inquiry.