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Conservative vs. Progressive Think Tanks |
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The political orientation of think tanks is as broad as in every other kind of institutions or organizations. It ranges from conservative over centrist to progressive. Still it can be noted, that there are considerable differences between the right and the left wing of think tanks, especially concerning funding sources and revenues as well as media relations, which have considerable consequences on their perception and influence on the public as well as on policy makers.
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Calculator
Calculators are machines for automatically performing arithmetical operations and certain mathematical functions. Modern calculators are descendants of a digital arithmetic machine devised by  Blaise Pascal in 1642. Later in the 17th century, Gottfried Wilhelm von Leibniz created a more advanced machine, and, especially in the late 19th century, inventors produced calculating machines that were smaller and smaller and less and less laborious to use.
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