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Certainly hardware compatibilty and commonality has a great deal to do w/ OA, but software applications have equal importance in the the OA construct. The key to OA is that is serves as a business model allowing competition in the market fostering innovation and improvement in computing systems. Much more to follow... Tomdisy 12:38, 29 August 2006 (UTC)
In practice, I think this term has been largely replaced by ideas like "modular" or other more specific concepts. — Preceding unsigned comment added by 188.8.131.52 (talk) 23:59, 15 November 2015 (UTC)