But he is definitely communicating. He just pushed the high chair all the way into the living room and banged on it yelling, his favorite word, "Aaaahhhh". I guess he is hungry. :-)
He has really figured out how to get his point across. When he wants milk he gets me to follow him into the kitchen, points to the cupboard with the bottles, tries to open the fridge where the milk is, and waits (semi) patiently while I fill a bottle.
And when he finds his pacifier or blanket it is pure delight on his face and a giggle in his chest.