The tools here are most useful under pressure. First, because they stop us from only reacting. They bring focus. They help us resist the takeover of the lizard brain. They remind us what sets us apart: We think. Lastly, they’ve been tested in a variety of environments with a variety of people. With varying levels of complexity. Different situations, different people, different needs. Bottom line: They work.

John Braddock, A Spy’s Guide to Thinking