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I think the description on abstraction is misleading. How would that abstraction be different from composition? Composition is a way of grouping multiple entities into a single entity. Abstraction should be thought more as ignoring irrelevant details. -- [[User:Esap|esap]]
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Two things.
First, I do not think that Smalltalk was implemented in Simula; in fact, I have never heard of a Smalltalk implementation in Simula. The article says so, but where did this info come from? It is safe to say that Simula was a heavy influence on Smalltalk, but was it actually implemented in it?
Second, a very good read about where objects come from is The Early History of Smalltalk[http://gagne.homedns.org/~tgagne/contrib/EarlyHistoryST.html].
- Lex Spoon
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