Understand the world, make better decisions, or at least sound smart.
Learn a new cognitive tool every week - concepts from psychology, philosophy, economics and other disciplines delivered straight to your inbox each Sunday to reshape how you see the world.
About Conceptually
A year ago I published an article called 52 concepts to add to your cognitive toolkit, a collection of mental models that had changed my own view of the world and decision making. The reaction was unexpectedly strong -- quickly more than 80,000 readers enjoyed the post. That got me thinking: one of the hardest bits of making use of mental models is consistently applying them. Reading them all at once and hoping they stuck was a fool's errand, so I went back to the drawing board for a better solution, the result of which you see before you: Conceptually, a new cognitive tool for you to practice and incorporate into your life every week.
Why is this free?
Ideas costs nothing, but can change how we see the world. I hope this website does the same: costs me basically nothing, and can hopefully change how we all see the world.
What you'll learn

Week 1: Signalling and Countersignalling
Why do we spend so much on wedding rings, do springbok's jump in the air, and is college so expensive?
Week 2: Explore or Exploit?
When should you try something new, or stick with what you already know and like?
Week 3: Marginal Thinking
How to think about the value of anything extra.

Week 4: Dual Processing Theory
How should we use our 2 systems of thought: gut-feeling, and rational thought?