For this particular book it is difficult to frame the core idea till you reach the half of it as there is so much going on, it develops a wonderful maze of knowledge , you try to learn the happenings and then there is a waterfall - series of suspense openings , connection of dots , clearing the thoughts and finally allowing a path to get out of the maze.
The book quotes the phrase "Its just a matter of perspective" and there is nothing definite explaining what is right or wrong ! Its just the way our mind takes it and develops a understanding.