The new year begins with a bad hangover from 2012’s inane debate over the “fiscal cliff.” The furious debate focused only on how much damage would be done to the economy and who would pay the price, how much and what would be cut, who would pay higher taxes and who would suffer the most. But this headache can’t define 2013, which must be a time to renew, not to ruin. Whatever final agreement comes out of the fiscal cliff will slow an economy already struggling to grow. The challenge is to turn to what can be done to rebuild, …