My latest post at AITS.org discusses the difference between the relative effectiveness of measures.
In Book VII of Plato’s dialogue, The Republic, the Greek philosopher introduces his powerful imagery of learning and means of perception in Allegory of the Cave. In his allegory, there is a group of prisoners who have lived in a cave since childhood, legs and necks chained so that they cannot move. Above and behind them is a fire blazing at a distance so that they can only see shadows of what is between the fire and the wall of the cave in front of them. A low wall has been built to hide men who carry statues and figures of animals so that the shadows of these figures appear on the wall…
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