The problem from the standpoint of conventional economics with the fiscal cliff is that it amounts to a double-barrel dose of austerity delivered to a faltering and recessionary economy. Ever since John Maynard Keynes, most economists have understood that austerity is not the answer to recession or depression.
Regardless, the fiscal cliff is about small numbers compared to the Derivatives Tsunami or to bond market and dollar market bubbles.
The fiscal cliff requires that the federal government cut spending by $1.3 trillion over ten years. The Guardian reports that means the federal deficit has to be reduced about $109 billion per year or 3 percent of the current budget. More simply, just divide $1.3 trillion by ten and it comes to $130 billion per year. This can be done by simply taking a three month vacation each year from Washington’s wars.