Recently, a team of researchers mapped the neural wiring of a fruit fly. They didn’t “program” the fly to walk or react to light; they simply recreated the architecture of its brain inside a simulation. The result? The simulated fly started behaving like a fly. It turns out that in complex systems, structure produces behavior . You don’t need to teach a piano how to sound like a piano; you just need to build it with the right tension and layout. When you strike the key, the s