Markets are moved by people, and people are irrational in predictable ways. Confirmation bias makes us seek evidence supporting our thesis. Anchoring makes us fixate on purchase prices. Recency bias makes us extrapolate recent trends forever.

The best investors aren't those who avoid all biases - that's impossible. They're the ones who recognize their biases and build systems to counteract them. Checklists, devil's advocates, and position sizing limits are all tools for fighting our own psychology.

In this topic, you'll learn to identify common investment biases, recognize when they're affecting your decisions, and build systems to make more rational choices.