I am mom of a 3 month old and I am agaist of letting my child cry it out and the example of the knife does not make any sense a knife can not be compared at all with a sleep pattern and here is why a knife is an object a baby may find suddenly and can be taken away and be given a toy or do something that will make him forget and a sleep pattern is something baby does
everynight, I have done this with my nephews and they totally forget I have never had to leave a kid sitting in the
floor criying it out for a knife!!!