Intuition is a term for the ability to understand something without going through rational and intellectual reasoning.It seems that understanding is suddenly coming from another world and out of consciousness.For example,someone is suddenly compelled to read a book.Apparently,in the book found the information sought for years.Or for example, feeling that he must go to a place,it turns out there he found a great discovery that changed his life. But not all intuition comes from the power of psi. Some of the intuition can be explained because of the causality.