Light rain fell in Dallas the morning of November 22, 1963. But by noon, the skies had cleared, in time for the presidential motorcade through the city. Imagine if instead it had kept raining. The top of the presidential limousine would have been left up for the motorcade, and Lee Harvey Oswald would have been unable to aim his rifle at President John F. Kennedy.
How would the world be different if JFK had served eight years, and it had been he, rather than Lyndon Johnson, who dealt with Vietnam, the civil rights movement, and all the other issues that arose?