1. A lesson on reading.
Not really, just a thought: Paul Auster, the American author who wrote City of Glass and a number of other novels, seems to be more famous here than he is in the States. I’ve only read that one book (and its graphic novelization, since Jacob had it), and most people seem never to have heard of him. Here I see his books in every bookstore. It probably has to do with the fact that he won the Prince of Asturias Award for Literature, a prestigious Spanish award, fairly recently.
2. A lesson on Theory of Mind.
When two people have an argument about ideas, rather than about facts, they both perceive the argument differently. They represent their background and ideas differently, and it becomes two different arguments when presented to two separate individuals. If both people think they’re right, then they skew the other person’s argument and present things against their own backdrop. That doesn’t make them right.