Jeanne Dixon effect

When the doomsayers of the cult of anthropogenic global warming some times get the future right think of Jeane Dixon. 

"By emphasizing a few coincidentally correct predictions and ignoring those that were wrong, she acquired both fame and notoriety. The ability to persuade the public in this matter is known as the Jeane Dixon effect.......

The Jeane Dixon effect

John Allen Paulos, a mathematician at Temple University, coined the term "the Jeane Dixon effect," which refers to a tendency to promote a few correct predictions while ignoring a larger number of incorrect predictions.^[4] Many of Dixon's predictions proved false, such as her claims that a dispute over the offshore Chinese islands of Quemoy and Matsu would trigger the start of World War III in 1958, that Walter Reuther, an American labor union leader, would run for President of the United States in the 1964 presidential election and that the Russians would be the first to put men on the moon."

source : 

http://en.wikipedia.org/wiki/Jeane_Dixon