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Openness: In contrast of encapsulation, Я encourages you to use open interfaces. In my opinion one of the main source of complexity is actually the habit to hide things from users. Instead we shoud see how objects are related to each other in order to come with an idea redefining things in a more suitable way.
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Compactness: Complexity exists in every system, you can either distribute it by smaller chunks or concentrate at one place. Я would prefer the latter.