I was skeptical. Now I am a believer. After three weeks of absolute failure at potty training with Max, I read this book and gave their system a shot yesterday afternoon. After only 15 minutes of going through the process from the book, Max sat on the potty and immediately went. I could not believe it. Less than an hour later, he had gone SEVEN more times and was initiating pottying on his own.
Here's my disclaimer: It has been about 30 hours, and uh, no, we are not finished potty training. That's okay, I wasn't actually taking the title of the book literally, although I'm told it can be done. For us, I was just thrilled that we made leaps and bounds in one day after weeks of nothing!