Sam Katz Online Chat:(conducted on June 20th, 8:00- 8:30PM) Philadelphia: The Great Experiment is a multi-format historical documentary television film and Internet project that presents the story of Philadelphia, the single most compelling stage for the unfurling and testing of American ideals. William Penn’s city was the first in the world to codify freedom of religion, individual rights, trial by jury, and a democratic assembly as the pillars of a constitution amendable by the people. Read more about the Project | Read the Chat transcript.