Instruct: Classify a given Amazon review as either positive or negative.
Query: explains the importance of sleep thoroughly

He makes many valid points backed up by his sleep research. There is a whole chapter on colic and sleeping that I read a few times. He doesn't explain what to do with colic babies and sleeping prior to 4 months, but does talk a lot about sleep training after that time. We haven't implemented any training yet as he's not at that point yet so I can't say if his methods are successful or not. But I agree how important sleep is to children and hopefully when we do try it it only takes the "week" that he claims it will take!