Precognition is the ability to see into the future through means other than logical ones. It is a type of extrasensory perception and is also known as second sight. Precognition differs from premonition in that it is usually visual and fairly detailed, whereas premonitions are vague feelings that something is going to happen. If you get the feeling that aunt Thelma is going to visit, that is a premonition. If you have an image in your head of aunt Thelma at your door, that is precognition. If aunt Thelma phoned you that morning telling you that she was going to pop in, that is probably neither precognition nor a premonition, it just means your phone is in working order. Precognitions usually happen during dreams or during states of abstraction such as daydreams and reveries.