Extracted from Wikipedia biographical data from Christmas till nowadays were analyzed and classified.
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Some historical cataclysm dates may be detected in peculiarities of lifespan distribution.
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New mass media generations cause changes in trends of number of biographies with time.
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Time dependence of grouped categories reveals an evolution of human priorities.
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The index of human priorities being quite a constant during almost all the history shows sharp jump at the end of the 20th century.
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