There are different kinds of writing. They have unique requirements.

James Joyce was a novelist. The article is about writing essays.

Paul Graham is one of our leading essayists. Measured by impact on "builders" he's probably the foremost essayist.

If you want to learn how to make documentaries, would you rather learn from the best documentarian or from Spielberg?

How is Paul Graham not an actual writer? He has written some extremely influential essays that have reached outside of just Silicon Valley.