The easiest decision is no decision. Let’s have two user interfaces, two modes: The easy mode for my mother-in-law, and the pro mode for engineers, McKinsey consultants, and investment bankers. Such dual-mode systems haven’t been very popular so far, it’s been tried without success on PCs and Macs. (Re-reading this, I realise the Mac itself could be considered such a dual-mode machine: Fire up the Terminal app, and you have access to a certified Unix engine living inside)

via iPad and file systems: failure of empathy | Technology | guardian.co.uk.