To be fair, I will offer the following defense for Pat Robertson.
Many science fiction movies, series, and books have tackled the possibility of premonition before. Most of these have pointed out a major problem with telling the difference between probable future events and definite future events.
Major Samatha Carter of Stargate SG-1 explained that while Classical Newtonian Mechanics allowed for an accurate glimpse of the future given that the seer is given all the initial conditions of every particle in the universe, Quantum Mechanics shot that out of the water. You could never know both the velocity and the position of the quantum particles, which reduces you down to only being able to tell the probabilities of certain future events taking place.
In the series Babylon 5, one of the prophets of Centauri Prime explained to Captain Sheridan that the future changes all the time and that the true prophets have to be able to develop the ability to sense which is the probable future and which is the definite future. In one of her prophecies of the definite future, her nephew Lord _____ (can't remember his name) would be killed by shadows. He ends up being killed by an ancient race called the Shadows. She also told Sheridan that he was going to face two choices, one of which would bring the destruction of the Babylon station. Fortunately, he chose the right one preventing the loss of the station.
In the scifi series 7 Days, the hero of the series went back in time to prevent a major catastrophe. The first thing he did was bet all his money on a team he knew would win. Unfortunately for him, his very presence in the past moved the air molecules in such a way that changed the events in the football game. He ended up losing all his money.
In X-men comic books (yes, I am a science fiction nerd), one of my favorite characters that ever was created was Destiny. Destiny had the gift of foresight, being able to see future events. Unfortunately, she often had trouble telling the difference between the probable future and the definite future. While she was in an intimate relationship with Mystique, Destiny was able to foresee the definite future of her own death. Destiny instructed Mystique to creamate her after her death and at such and such time and date Mystique was to throw her ashes into the river. Mystique followed Destiny's instruction and at the exact time and place a gust of wind blew Destiny's ashes back into Mystique's face, which made Mystique smile at the last joke played on her by her now dead former lover.
The point is the weather is a chaotic system. The world as a whole is composed of many chaotic systems. IFF there is such thing as premonition, we should expect these people with these premontions to foresee both probable and definite future events. Personally, I would expect that without proper training these people would have the same problem of telling the difference between probable and definite future events just as the science fiction characters that I have mentioned.
PS - I never forgave the comic book writers for killing off Destiny. She was probably the most gentle and sweet characters in the x-men series. Personally, the writers killed her off because of political reasons. The only gay character to have ever made it into such a major scifi comic series.
Edited by Tazmanian Devil, : Spelling
AKA G.A.S.B.Y.
George Absolutely Stupid Bush the
Younger