Just a few weeks before I used to think that. Used bouncing and prolongation and was sick and tired of practicing them for 15mins everyday since march 2019 and saw zero improvement in my speech. Then. I got to know about the book and I've read 100 pages so far and he opposes all the techniques I had ever encountered. Basically he wants PWS to avoid all those techniques that sound mechanical. Just hoping for the best that this book will help me eliminate my stutter and lead to fluency.