The document compares the original seismic times and Commission report times for American Airlines Flight 11 and United Airlines Flight 175, which were involved in the September 11, 2001 terrorist attacks. There is a 14 second difference for AA11 and a 17 second difference for UA175 between the original seismic times and those reported by the 9/11 Commission. The document also outlines the scientific method for evaluating hypotheses to explain puzzling events, including natural causes, conventional human causes like arson, and unconventional human causes like directed energy weapons.