The 40th anniversary of President John F. Kennedy's assassination has prompted the usual round of articles and TV programs examining the assassination and theories of what actually happened. The speculation is endless — not because people are searching for meaning in a meaningless world, as one TV program suggested. Rather, the speculation is endless because the official explanation offered by the Warren Commission is difficult to believe. That may have been the way it happened, but it is not a genuinely satisfactory explanation. We don't have problems with the idea that Lee Harvey Oswald was a shooter, but we do have problems with the idea that he was the lone gunman . There are four crucial points that, for us at least, make it extremely unlikely that Oswald was operating alone: 1.