The second major step is editing. Production (the first major step) and editing (the second) are different functions, and should be treated that way. This is because each interferes with the other. The purpose of production is to produce. The function of editing is to reduce and arrange. If you try to do both at the same time then the editing stymies the production. It’s not faster to combine them, nor is it better, and it is bound to be frustrating.
In essence, Design Thinking is the integration of techniques, like Lean UX, customer journey mapping, and prototyping directly into the way the organization does business every day. It’s using the basic, proven tools of design to the maximum effect.