The most important early lesson I learned was to write down my criteria for making investment decisions so that I could turn them into decision rules. That’s because I discovered I could express my decision-making criteria in the form of algorithms that I could embed into computers. By running both decision-making systems — i.e., mine in my head and mine in the computer — next to each other, I learned the computer could make better decisions than me because it could process vastly more information than I could, and it could do it faster and unemotionally. That insight helped me get out of my own head and make better decisions over time. nikhilkamathcio