While I more or less agree with your conclusion, as one of extreme simplicity I think there is a major flaw in your hypothetical. Most people don't regularly de

While I more or less agree with your conclusion, as one of extreme simplicity I think there is a major flaw in your hypothetical. Most people don't regularly deal with chemistry, biology, and astrophysics. Plumbing is rather commonplace and while I would't expect an average person to understand the intricacies of a complex system, they know enough to simply "get by" by fixing small issues if they choose.