Car Analogies? Even Stephenson's book that the GP references doesn't pull that off. Why do cars need to be refilled with gas? Why do their engines require regu

Car Analogies? Even Stephenson's book that the GP references doesn't pull that off. Why do cars need to be refilled with gas? Why do their engines require regular oil changes? Why do their doors and ignition devices have keyed locks? Why do you need to learn to drive it, coordinating your arms, legs, eyes, and ears? Why do you need to learn the legal and social rules of traffic? There's essential complexity here. The "mental model of how a computer works" is learning the UI paradigm (rules of the road), not busses and syscalls (drive shafts and carburetors). The iPad doesn't have a 35-year legacy of physical removable media for user data. It also requires syncing to iTunes as the sole means of initialization and backup.