Imagine Tolu is in a team meeting. A colleague dismisses her idea without explanation. She feels a flush of heat and snaps back with something sharp. The meeting derails. She leaves feeling worse than before. Nothing she did was unusual. It was automatic. Shane Parrish spent years studying how the best thinkers in the world make decisions differently. His discovery: it is rarely about intelligence. It is about whether you are thinking at all — or whether the situation is thinking for you. Most reactions are not decisions. They are defaults — automatic behaviours triggered by the moment. Parrish identifies four: The Emotion Default: you react to how you feel rather than what you want to happen. Anger, embarrassment, fear, and excitement all hijack the controls before reason arrives. The Ego Default: you react to protect your sense of self. Being right matters more than getting good outcomes. Admitting error feels like losing. The Social Default: you go along with whatever the group is doing or saying to avoid standing out. You agree with things you do not actually believe. The Inertia Default: you keep doing what you have always done because changing requires energy. You resist better options simply because they are unfamiliar. Between every stimulus and your response, there is a space. The defaults fill that space the moment you are not paying attention. Clear thinking is what happens when you reclaim it.