What is it?
A technique that brings us to the heart of a problem quickly and directly.
How is it done?
It consists of establishing a problem or question without a clear history and passing it through the filter of the Five Whys. We will repeat these questions in order to make the originating cause obvious, and this will make it easier to understand.
Q1. Why are we behind in the execution of the product?
A1. Because we had to make more changes than we expected.
Q2. Why did we have to make more changes than we expected?
A2. Because the customer was not clear about the specifications of the product.
Q3. Why wasn’t he clear about ...