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Title: Good for what it tries to do but...
Review: The book is a very good exploration of the perspective it starts from - which is basically that objects are state machines (known as entity life histories in SSADM).It shows how a reusable method is found where two or more events have the same effect, at the same state, in a state machine.And its (partly automated) derivation of event-oriented procedures from object-oriented state machines is remarkable.However, a weakness is that the discussion is all about method bodies rather than interfaces. And the authors are not enthusiastic about inheritance or polymorphism.
