I think they're sponges, so any input--even from TV--is absorbed.
Better than TV, generally, is human interaction. But I think there's a big exception: if you're not expecting your babies to read yet, you don't know to teach them as if they can read. TV makes no assumptions about reading level, as people do, and therefore kids might learn things from TV that they wouldn't learn from us...because we aren't teaching them that stuff yet.
I haven't had coffee yet, so I'm not sure if I'm making sense...
