I’m starting to think that you have to learn to be tricked by ventriloquism. I’ve had lots of experience playing with kids and puppets and pretending that they can talk. If they are young enough they can really believe that the puppets are alive. My 9-month-old son is having none of that. I can hold a puppet or teddy bear in front of him and bounce it around and make silly sounds and he enjoys that. But as soon as I try to pretend that the puppet is singing or talking he turns his head and looks at me. He just knows that’s where singing and talking comes from. Maybe that’s what Sesame Street is for… teaching you to believe in talking puppets.