silent her whole life until

How high does the blue sky go? Why is grass green instead of pink? Who invented hieroglyphics? I stared at my three-and-a-half-year-old daughter. Consternated and confused. For three and a half years she has been gathering these questions. Studying us, learning from us, gleaning our spoken language. Yet, until today she did not give us any indication that she knew a word. She had not said boo, goo, bah, caw, dada, or any other sound. She begins with complete questions? I am dumbfounded.