As a Christian I want to point out that this book is based on very faulty theology, not to mention a complete lack of any kind of understanding of the human needs of an infant for comfort and food. It's bad stuff! There is a time and place for the cultivation of "sleep habits" but that comes many months down the road ... it is abnormal for a baby to sleep through the night within weeks of birth. The infants who "respond" to this regime do so because they have given up hope of their needs being attended to. Need I say more?