I have a tough time arguing with your reply, dixie - for the main reason that that is precisely why I believed in a conspiracy for so long.
My thinking, in a nutshell was this: if you asked an actuary to calculate the odds of a lone assassin killing the president, combined with another crazed assassin killing the original assassin, then compounded it further by having the slain President's brother also assassinated five years later as he was on the cusp of becoming President by yet another crazed lone assassin - what would the odds be? They're be astronomical!
Or would they???
On the 50th anniversary of the assassination, the NYT put out a couple of videos with Josiah Thompson - who book Six Seconds in Dallas, published in 1966 was the first book ever published championing a conspiracy theory. Even Vincent Bugliosi describes it as a "serious, scholarly work." Thompson is pro-conspiracy although he doesn't champion any one theory - just his belief that a conspiracy took place. He made two videos, which I think were both excellent, one which served as a more cautionary tale, regarding the "Umbrella Man" (whose nickname was in fact coined by Thompson himself) and another more general video, both of which links I'll include here for whomever might be interested. The Umbrella Man video delves into the concept that coincidences do indeed occur all the time, which Thompson points out is a recurring theme in quantum mathematics.
"The Umbrella Man" (6.5 mins)
https://www.youtube.com/watch?v=yznRGS9f-jI"November 22nd, 1963" (13 mins)
https://www.youtube.com/watch?v=5ICxqP-t1MsBoth of these shorts were directed by Errol Morris, filmmaker behind "Fog of War" and other great documentaries. He also did one about famed mob lawyer "Don't Worry Murray" Murray RIchman I believe you can find on YouTube also if you want.
Also: examples of other "unbelievable" coincidences:
https://www.cracked.com/pictofacts-10-29-mind-blowing-coincidences-you-wont-believe-happened
