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Checking the history of the file can also be quite revealing. First version usually looks good. Later, most commits are just trying to squeeze in new functionality by changing as little as possible of the existing code. 20 check-ins later the original design is no longer relevant and mostly consists of exceptions because nobody was brave enough to refactor. Getting refactoring approved could also be hard by in certain cultures and organizations because "why change something that is proven to work in production"

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