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"Would U.S. tech workers join a union?" survey average: 67% likely
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This is a most excellent place for technology news and articles.
Productivity isn't affected much by individuals beyond some marginal differences. An accountant from 1920 can never be as productive as an accountant today no matter how hard they try. When productivity is discussed by economists, it means investment in equipment and training that makes people produce more for the same hours. When productivity is discussed by business leaders in relation to unions, you're being lied to or they're incompetent.