But what do you say to people who refuse to make the necessary effort to understand what has already been written, especially, say, an economic paradigm with explicit material benefits for all citizens? “I don’t understand” can be merely an excuse for continuing to do nothing to help make the world a better place.

I once picked up a book, Reason and Justice, by Richard Dien Winfield. This was near the end of graduate school, when I was completing a Thesis that centered on John Rawls's A Theory of Justice. I read the first paragraph of the book and had no clue what Winfield was saying. I bought the book. I realized it was on me to make the effort to understand it.

That turned out to be by far the best example of philosophy I have ever read. Reading that book completed the training of my brain--and furthered by vast degrees my understanding of the problem of justice.