Rich Hickey discusses the concept of "Hammock Driven Development" where developers spend time away from their computers in places like hammocks to think deeply about problems and design effective solutions. Some key aspects of Hammock Driven Development include taking time to understand the full context and constraints of problems before proposing solutions, being willing to critically analyze even your own past ideas, and using techniques like drawing pictures and discussing out loud to help express and develop ideas in new ways. The goal is to use time away from screens and normal work environments to gain new perspectives that can lead to better technical strategies and designs.