Investment and Consumption

Bob Higgs explains the wrongheadedness of focusing on consumption as a driver of the economy.  Here are key passages:

As every student of the business cycle learns early on, the most variable part of aggregate expenditure is private investment. When real gross private domestic investment peaked, in the first quarter of 2006, it was $2,265 billion, or 17.5 percent of GDP. When it hit bottom in the second quarter of 2009, it had fallen by 36 percent to $1,453 billion, or 11.3 percent of GDP...