CIA’s “Phoenix Checklist” for thinking about problems

The “Phoenix Checklist” is a set of questions developed by the CIA to define and think about a problem, and how to develop a solution.
THE PROBLEM
Why is it necessary to solve the problem?
What benefits will you receive by solving the problem?
What is the unknown?
What is it you don’t yet understand?
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Here’s the CIA’s “Phoenix Checklist” for thinking about problems