The reference to 'productivity' in the article 'Zombie Nation' (ET, February 2022) illustrates the danger of assuming that one discipline's understanding of a term is the same as another's. For engineers, 'productivity' translates into the number of objects output per person, and an increase means making more in your shift. When politicians refer to 'productivity' they mean economic productivity, or contribution to GDP (gross domestic product), an increase in which means people spending more on goods and services.
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