Last week, economists Timothy Conley and Bill Dupor concluded that the stimulus package (The American Recovery and Reinvestment Act of 2009 0r ARRA) shrank the economy even in the short run, destroying about 550,000 jobs overall.   (The stimulus saved or created 450,000 government jobs, but that was more than offset by the fact that the stimulus wiped out a million private-sector jobs).  As they noted in their study,