Do some of us avoid tragedy by foreseeing it? Some scientists nowbelieve that the brain really CAN predict events before they happen Professor Dick Bierman sits hunched over his computer in a darkened room. The gentle whirring of machinery can be heard faintly in the background. He smiles and presses a grubby-looking red button. In the next room, a patient slips slowly inside a hospital brain scanner. If it wasn't for the strange smiles and grimaces that flicker across the woman's face, you could be forgiven for thinking this was just a normal health check. But this scanner is engaged...