A TIME magazine article about JFK conspiracy theorists includes the following passage:

“If only Kennedy had lived,” begin so many of their idle thoughts. Kennedy would never have escalated the war in Vietnam; he would never have let 60,000 American soldiers and countless civilians die in Southeast Asia. They believe he would have defused Cold War tensions and shrunken the American nuclear arsenal. They believe he really would have scattered the CIA to the winds.

It’s funny that none of them appears to have had an “idle thought” about Kennedy building upon one of his few real accomplishments: supply-side tax cuts.