Once upon a time, there was no internet. And instead of bloggers and pundits and tweets we had something called public intellectuals, people who read widely, thought deeply, and wrote long, passionate, carefully reasoned, thoroughly documented and beautifully written articles about the important issues of our day, not to be confused with reality television or celebrities. The publication at the heart of this was the New York Review of Books. Martin Scorsese’s documentary, “The Fifty Year Argument” tells the story of this venerable and venerated publication, featuring interviews with its editors and contributors. It premieres tomorrow on HBO.