Not familiar with Jackie Silberg but definitely agree that talking and engaging with infants is key for sure .... the more we talk and label things the more vocabulary they develop - however the thing that concerns me about messages like this is that while 'engagement' is important and GOOD too much of a' good thing' turns into a BAD thing ... life is about balance ....babies also need uninterrupted floor time to just 'explore' the world around them and discover their own physical and motor self as well as how to 'self learn' through a well laid out environment