As i mentioned it does work. And it is a good guideline to look at when you're stuck. But it's not the fundamental solution. TRIZ teaches you to emulate creativity. The whole idea is "how can an even ordinary person come up with creative ideas?" My point was that's all fine and it's good to learn that skill, but it would be better if you shoot for actually "becoming a creative person" instead of "ordinary person coming up with creative ideas". I suggested that book above because I found it helpful from that point of view.