Regarding the concepts by which should be defined these material - immaterial entities there were held many debates and were developed many theories, which, contrary to the original goals of the authors, who intended to clarify and clear up these concepts, they have created that artificial fragmentation of these concepts, producing confusion and perplexities, even distorting the objective reality. Bob Woodward. Stop putting off having difficult conversations. Garth Stein. The current mood, however, feels different.
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