From Fire to Thought: How Cooking Fueled Human Intelligence
Human evolution is full of astonishing turns—but none more powerful than this: our ancestors’ brains, once small and simple, became the most energy-hungry, complex machines on Earth . Why did this happen? What changed? The answer isn’t just intelligence or curiosity—it’s fire, food, and energy . 🔥 It Starts With Fire: Humanity’s First Tech The discovery and control of fire—roughly 1 to 1.5 million years ago—was more than warmth or protection. It was a biological revolution . 🔍 What Fire Changed: Cooked food is easier to chew and digest. Cooking breaks down plant toxins and denatures tough proteins. Cooked meat provides higher caloric yield per gram than raw meat or raw plants. That energy surplus allowed the human body to redirect its fuel budget , and evolution responded in kind. ⚙️ The Biological Economics of Brain Growth Let’s break it down like a resource game. 💡 Rule 1: Brains Are Expensive Your brain makes up ~2% of your body weight , but uses ~20% o...