In 1991 I devised a course 'Science and the Paranormal', which was an introductory epistemology component for first-year philosophy at the University of New England. William Grey 'Scepticism' is derived from the Latin word 'sceptikos' which means to doubt. Scepticism is calling into doubt what it is reasonable to believe. The sceptics thought the world couldn't possibly be round and that UFOs were figments of peoples imagination.
Sceptics deny the existence of extrasensory senses.
The understanding of these events is outside the realm of human understanding. It is easier to not believe the unbelievable. The paranormal community uses vast and varied methods for predicting the future. This is an indication of the difficulty of the job. William Grey demonstrated that his predictions were more accurate than those of professional philosophers.