About a decade ago when Triggerstreet was thriving, you were the one writer about screenwriting who was universally revered. While you've continued your vision, The Protagonist's' Journey enriches it with a treasury of examples from a wide variety of film and television. The book provides not the what and the why but the how.

In my limited experience, there's no such thing as "The only screenwriting book you'll ever need." A very few writers are so intuitive (and have read / seen a boatload of movies) that they don't need any advice other than how to format the script properly. But most of us would benefit from the wisdom of others--how much depends on the individual. The Protagonist's Journey should be the FIRST book on screenwriting to read. Writers can supplement the book if necessary. The pros quoted in the article know what they're talking about when they call it essential.

A bit of advice to anyone unfamiliar with Scott's approach: Read the book twice. It's not complicated like the work of McKee or Truby, but it's complex and systematic, A second reading will drive home the wisdom you might have missed the first time.