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Tag Archives: Hill and Kakenmaster

Ask What Changed

When you try to understand change, whether in economics or in the rest of life, one good rule is to ask what other factor or factors changed. To explain a change in one variable, we have to point to another variable that changed, not to one that stayed the same. Asking what changed can lead us to reject some explanations and embrace others. Consider three examples: the recent California fires; cable television’s sudden decision to drop C-SPAN in the early 1990s;...

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