Nonsense. A modern CPU has so many parts, no single human can understand its circuitry. And the complexity is ever increasing. The chair comparison is extremely poor; we live in an environment that is ever increasing in complexity and even today, most people don't understand the array of modern technology they're surrounded with and I don't see that trend stopping. You grow up with chairs; you know how a chair works and could build one. You grow up with x86 CPU? Ha, try to build one.