Ok, let’s drop the hedging of bets in the http://www.straightdope.com/mailbag/mdixon.html#update mailbag article re: Jeane Dixon.
Jeane Dixon did not predict the death of John Kennedy.
Jeane Dixon did correctly predict the death of a Democratic president in office after election in 1960. She failed as late as the year of the election to predict that the president would be Kennedy.
And, as the SAB writers correctly note, even a blind you-know-what finds a nut now and again. 