This month, as in the past five Decembers, the magazine looks back on the passing year from a distinctive vantage point: that of ideas. Our editors and writers have located the peaks and valleys of ingenuity — the human cognitive faculty deployed with intentions good and bad, purposes serious and silly, consequences momentous and morbid. The resulting intellectual mountain range extends across a wide territory. Now it’s yours for the traversing in a compendium of 74 ideas arranged from A to Z.

http://nytimes.com/indexes/2006/12/10/magazine/index.html

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