The 17th Century: The Invention of the First "Computers" The devices often considered the first "computers" in our understanding were rather calculators than the sophisticated combination of hard- and software we call computers today. In 1642 Blaise Pascal, the son of a French tax collector, developed a device to perform additions. His numerical wheel calculator was a brass rectangular box and used eight movable dials to add sums up to eight figures long. Designed to help his father with his duties, the big disadvantage of the Pascaline was its limitation to addition. Gottfried Wilhelm von Leibniz, a German mathematician and philosopher, in 1694 improved the Pascaline by creating a machine that could also multiply. As its predecessor Leibniz's mechanical multiplier likewise worked by a system of gears and dials. Leibniz also formulated a model that may be considered the theoretical ancestor of some modern computers. In De Arte Combinatoria (1666) Leibniz argued that all reasoning, all discover, verbal or not, is reducible to an ordered combination of elements, such as numbers, words, colors, or sounds. Further improvements in the field of early computing devices were made by Charles Xavier Thomas de Colmar, a Frenchmen. His arithometer could not only add and multiply, but perform the four basic arithmetic functions and was widely used up until the First World War.

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Jürgen Habermas Jürgen Habermas (b. 1929) is the leading scholar of the second generation of the Frankfurt School, a group of philosophers, cultural critics and social scientists associated with the Institute for Social Research, founded in Frankfurt in 1929. The Frankfurt School is best known for its program of developing a "critical theory of society". Habermas was a student of Adorno, becoming his assistant in 1956. He first taught philosophy at Heidelberg before becoming a professor of philosophy and sociology at the University of Frankfurt. In 1972, he moved to the Max-Planck Institute in Starnberg, but in the mid-1980s, he returned to his post at Frankfurt.

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