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Most of this article is copied from Sonda, 2014, which is also mentioned in the sources, but the fact that most of the article is a quote is not made clear rendering it plagiaristic. Maybe change that?
Theories are not made outdated because a communist country collapses. Theories are outdated because of massive failures of insight, lack of supporting evidence, or simply a paradigm shift that makes them obsolete. The criticisms section needs an overhaul. —Preceding unsigned comment added by 208.107.115.29 (talk) 14:00, 23 April 2009 (UTC)[reply]