Carl Sagan's Encounter With a Dolphin's Theory of Mind

I was swimming in a large indoor pool with Peter. When I threw the pool's rubber ball to Peter (as was natural for me to have done), he dove under the ball as it hit the water and batted it with his snout accurately into my hands. After a few throws and precision returns, Peter's returns became increasingly inaccurate – forcing me to swim first to one side of the pool and then to the other in order to retrieve the ball. Eventually, it became clear that Peter chose not to place the ball with...

 Sagan's Positive View of Advance Alien Civilizations

It is at this point that the ultimate significance of dolphins in the search for extraterrestrial intelligence emerges. It is not a question of whether we are emotionally prepared in the long run to confront a message from the stars. It is whether we can develop a sense that beings with quite different evolutionary histories, beings who may look far different from us, even "monstrous," may, nevertheless, be worthy of friendship and reverence, brotherhood and trust. We have far to go; while th...

 When Babies Develop a Theory of Mind

By the time babies are about one-and-a-half yearsrs old, they start to understand the nature of these differences between people and to be fascinated by them. Again we can demonstrate this systematically. Alison and one of her students, Betty Repacholi, showed babies two bowls of food, one full of delicious Goldfish crackers and one full of raw broccoli. All the babies, even in Berkeley, preferred the crackers. Then Betty tasted each bowl of food. She made a delighted face and said. 'Yum," to...