The authors lay out a very good case for the weaknesses and perils of “Brainstorming” an idea. They systematically lay out a 5 day plan with strict limits that have produced wonders at Google Ventures. The authors claim that random brainstorming almost never produces usable results.
I do think implementing a rigid system like this might be a tough sell in many workplaces. Especially those with entrenched methods. It might also not be right for every situation. However, if you have a big problem to solve it sure seems to be worth the effort. Look at Google’s successes to see this much.