Michael Lopp, on the “design triumphs” of iOS:
One of the biggest design triumphs of iOS and iOS hardware remains its painless approachability. Famously, a two-year-old can deftly traverse the operating system because anything resembling an operating system has been abstracted into a handful of obvious and natural interactions: touch it with your finger and a predictable action will occur. No, you don’t need to understand what a file system is, nor a menu item. The triumph of iOS is that the technology gets out of the way and allows the user to act without friction.