When the Worst of the Best is better than the rest

When the Worst of the Best is better than the rest

The set theory is a commonsensical heritage of arithmetic. By defining a selection from a universe as a set, it makes value judgments that could relate to the mass. The Economist Intelligence Unit, the research arm of the highly prestigious Economist news magazine experiments with the set theory every year. To execute its livability survey, it selects 140 cities out of millions of cities across the world. This means a set of 140 cities out of a million plus universe of cities.

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