cbb10/25/83 ;;Quote: object-oriented programming started in 1949 with using Monte_Carlo methods for a heavy water reactor

cbb10/25/83 ;;Quote: instead of abstracting physical processes into mathematics, simulate the process with a model

cbb10/25/83 ;;Quote: Simula provides safe reference by separating reference from the thing itself; e.g., queue elements have succ, pred, out, and into

cbb10/25/83 ;;Quote: Simula provides a stacking hierarchy of actions, a nesting hierarchy of components, and an inheritance hierarchy of classes

cbb10/25/83 ;;Quote: abstraction was successful in Simula because started with simulating the real world

cbb10/25/83 ;;Quote: time is a (single?) ordered sequence of event times

cbb10/25/83 ;;Quote: a state has substance (what has materialized), properties (what is measured), and actions (what is going on)

QuoteRef: nygaK10_1983 ;;cbb10/25/83 p. 58 -- Khris Nygaard on Simula and object- oriented programming is certified plug board operator of IBM equipment c.a. '48 developed Delta 73-75 as general system description language with a continuous change of state and full concurrency. developed Beta '76 as an object-oriented programming language.

QuoteRef: nygaK10_1983 ;;cbb10/25/83 moved into operation research e.g. modeling attacks on Norway. These systems were too complex to capture through mathematics. Then into industry through Norwegian Computer Centre.

QuoteRef: nygaK10_1983 ;;cbb10/25/83 Simula developed with O.J. Dahl as programming language expert.

QuoteRef: nygaK10_1983 ;;cbb10/25/83 Nygaard helped to invent abstraction in programming field.