Shane Parris - Decision By Design Apr 2026

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: Shane Parris - Decision By Design

Focusing on eliminating avoidable errors and "default" behaviours (ego, social conformity, and inertia) rather than just seeking brilliance. The official course page on Farnam Street provides

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

How to Make Smart Decisions Without Getting Lucky . Mental Models: The Best Way to Make Intelligent Decisions .

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

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