JFK Assassination: Conspiracy or Not?

I do not believe there was a conspiracy in the JFK assassination. The likelyhood that the CIA, Mafia, and Oswald teamed up to assassinate the President of the United States are, in my opinion, very unbelievable. Although the CIA and Mafia plotted to assassinate Castro, I do not believe they had the same plot for JFK. Also, almost every theory except one has been proved to be false. There were 53 pieces of evidence proving Oswald's guilt. Each piece of evidence points to Oswald as being the only suspect in the assassination. And, if the did Mafia and CIA did plot to assassinate JFK, out of all the people they could choose, Oswald would probably be pretty low on their list.