The second book I read, was one recommended by the first book, and about 800 users on Amazon. Turns out that Harvey Karp is the guru of our generation, as everyone I've spoken to in person has read the book or watched the DVD. Only time will tell how the 5 S's (swaddle, side/stomach, shush, swing, suck) will work, but I did like the premise of the book. Even though it is a bit demagogue-ish in it's vocabulary: the fourth trimester, the cuddle cure, being held for 12 hours a day is only half of what the baby got in the uterus, etc, the ideas seem logical. I would have been interested to read more of the research behind it, the anthropological studies, but I understand it is written in a very simplified manner for the general public. I do like that it follows the ideas of attachment parenting and I like that the instructions for how to perform the S's are clearly laid out with diagrams and lots of explanations. Hopefully it works as well as it sounds.