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One of the most peculiar, and least understood, features of
the Washington policy process is the extraordinary dependence of
policymakers on the work of think tanks. Most Americans �� even most
of those who follow politics closely �� would probably struggle to name
a think tank or to explain precisely what a think tank does. Yet over the
past half-century, think tanks have come to play a central role in policy
development �� and even in the surrounding political combat.