Shane Parris - Decision By Design May 2026

The program is designed to help professionals and executives build a personal "mental operating system" for consistently making better decisions by moving away from emotional defaults and toward structured frameworks. Key Components of the Framework

Identifying the one critical factor that makes subsequent decisions easier or unnecessary.

Using tools like the 10-10-10 rule to evaluate how a choice will impact the next 10 minutes, 10 months, and 10 years. Shane Parris - Decision By Design

Focusing on eliminating avoidable errors and "default" behaviours (ego, social conformity, and inertia) rather than just seeking brilliance.

A core practice of the course is keeping a Decision Journal to record expectations and rationale, which allows for objective feedback and calibration over time. Related Resources The program is designed to help professionals and

The official course page on Farnam Street provides a detailed breakdown of the 12-week curriculum. Decision by Design - Farnam Street

The curriculum focuses on practical skills rather than academic theory. Key modules and concepts include: Decision by Design - Farnam Street The curriculum

If you are looking for specific written content that captures the essence of the course, these articles from Parrish's site are the most relevant: