The Freakonomics blog points out that race-car driver Jeff Gordon's survival, after a serious crash at the Pocono 500 yesterday, was likely due to major safety improvements mandated by NASCAR after Dale Earnhardt's death. (See also the authors' column ($) in the New York Times and their corresponding blog entry on the same subject.)
In fits and starts, we learn; over time, we help to build our corner of the universe.
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