An eight-year-old model of iPad is now considered vintage and obsolete. For comparison, the Apple ][ was made from 1977-1993 (16 years) and the January 1983 Apple //e would’ve had exactly the same software support as the final model sold in November 1993, or the compatibility cards for Macintosh sold from 1991 onwards.
OOP the Easy Way
Object-Oriented Programming the Easy Way: a manifesto for reclaiming OOP from three decades of confusion and needless complexity.APPropriate Behaviour
APPosite Concerns
FSF