Two Minds, One Brain

Ok, so hopefully now you’re starting to see how much of our reactions are shaped by our Riverbank Mind, instincts that are fast, automatic, and deeply ingrained. But here’s the fascinating thing about humans: We’re not just creatures of instinct. We also have the ability to pause, plan, and reflect. To think about our thinking. This is a familiar distinction, the tension between emotion and reason, or our reflexive brain versus our reflective brain. Psychologist Daniel Kahneman describes this as two systems in the brain: System 1 is fast. Instinctive. Effortless. System 2 is slow. Deliberate. Reflective. System 1 is recognizing a friend on the street, system 2 is identifying the capital of Australia (unless you’re Australian!). If you have to think about something - is it Sydney, Melbourne? Canberra? - that’s system 2. If there’s no ‘thinking’ thinking involved, it’s system 1. This may seem technical, but this is such an important distinction to keep in mind. This explains so much of how our minds work and thus can help so much in helping us lead lives more in line with our intentions. Also, importantly, It’s not that one system is better than the other—they each evolved for a reason. -    The fast system helps you respond quickly to what’s urgent. The slower system evolved later, as humans started to live in more complex social groups—where planning, cooperation, and reflection became just as essential for survival. -    The fast system helps you survive. The slow system helps you choose how you want to live. Ok, so why are we talking about this? This is where design comes in. Because while your fast brain reacts automatically, your slow brain—the reflective one—can shape the environment in advance, so that your fast brain encounters better defaults. So it’s not about winning a tug-of-war between parts of yourself, it’s about getting them to work together.