Couldn't you say that they technically applied the Feynman method recursively? The original problem was the design of the divider and how to implement it. Afte

Couldn't you say that they technically applied the Feynman method recursively? The original problem was the design of the divider and how to implement it. After looking at some half-working solutions, the problem changed to being able to find the cause of the broken half, where they came up with the "mechanical technique" for debugging. I'm not familiar with the method, but the second step, "Think real hard", is quite broad which allows the technique to be applied to anything as long as there is a problem and solution (steps 1 and 3). 1. How do I design a divider? 2. Thinking 3. Solution and 1. How do I determine what's wrong with my design? 2. Thinking 3. Mechanical technique