"Back off" says Secretary Rumsfeld to those of us critical of the war; "No one can predict the future with absolute certainty.”
Of course Rumfeld's also the guy who said in February of 2003 that we'd be "welcomed" by Iraqis and "“It is unknowable how long that conflict [the war in Iraq] will last. It could last six days, six weeks. I doubt six months.”
The problem, Mr. Secretary, is that you can't even predict the future with semi-correct certainty.