We got so many letters from readers asking about it and so many pitches from writers wanting to write about it. Definitely there was increased interest.
I don't know how many parents are actually doing it, in the midst of all the other things parents have to do. We haven't written about it because we don't want them to feel guilty or pressured.
Because of all the hype, they're definitely more aware that their baby does know and can communicate more than he can actually say. That message is really important.