Unrealistic

The word I hate the most. what does it mean ?
an unrealistic person ? he is in real life , that's make him the complete opposite of being unrealistic. unrealistic thinking , well life is about your perception .
unrealistic movie or a picture ? Hello , it's a movie . it doesn't have to be realistic , it's hypothetical . it has nothing to do with reality unless you want it to.it's art , it doesn't have to be real .
Ed wood discovered that along time ago , maybe we should learn from him ...