Complex Behaviors from Simple Brains

From Santa Fe Institute.  This is often stated as a precept of complexity theory.  Though the precise arrangement of hardware, connections and rules is often difficult to determine.   Control problem is easier, but not necessarily easy.

Paper: Complex behaviors can arise from simple brains
How much brain power do you need to control your body? It’s a key question for robotics and artificial intelligence researchers, and the answer is, well, not all that much. The key, according to new research from SFI Professor Nihat Ay and colleagues, is that bodies have to obey certain rules — the laws of physics and biomechanics, for example — that make solving the control problem easier. ... "