In spite of the fact that the Pocono Conference on theoretical physics lasted four days, there did not seem to be time enough to discuss everything that people wanted to. As one conferee remarked, we had to take time out to learn some new things about physics as we went along.
In June 1947 the National Academy of Sciences arranged an informal conference at Shelter Island, New York, to which a small group of theoretical physicists came to sit together and talk over the problems in their field. The success of this first conference prompted the National Academy to sponsor a second one this year, which took place at Pocono Manor in Pocono Summit, Pennsylvania, March 30 to April 2. Dr. Feynman, who attended both conferences, describes what took place this time.