He works with the same writers again and again.
We looked at every writing credit from every TV show and miniseries David Simon has produced. Here's a breakdown of the people who have written for more than one project.
He finds people who can write about their own experiences.
William F. Zorzi was a reporter at the Baltimore Sun before writing for The Wire.
After The Wire, Simon produced the HBO miniseries Generation Kill, which was based on a book by journalist Evan Wright.
Wright, who embedded with a Marine Corps reconnaissance battalion during the 2003 invasion of Iraq, co-wrote the miniseries.
Lolis Eric Elie, a New Orleans–born author and filmmaker, was a story editor for Treme.
He looks for source material and writers from outside the TV industry.
"I tend not to hire people who are trying to become television writers. I tend to hire novelists or people who have never written television."