THEORY OF TIME TRAVEL: TIME TRAVEL IN AVENGERS ENDGAME

THIS BOOKS DEFINES WHAT IS TIME IN THE BEGINNING.THEN THE AUTHORS EXPLAINS TIME DILATION, WHAT IS TIME TRAVEL,HOW IT IS POSSIBLE,DIFFICULTIES,TIME PARADOXES,TIME TRAVEL THEORIES IN DETAIL , ETC...2 ND PART OF THIS BOOKS SAYS ABOUT THE CONCEPTS OF TIME TRAVEL IN AVENGERS ENDGAME MOVIE.THEORIES ARE EXPLAINED WITH PICTURES .