Eventually the markets will be so tired of false, ineffective promises that the markets will conclude that the Eurozone leaders have no credibility and will reject the Euro currency and Eurozone bonds resulting in a severe crash which will affect investors in all markets.

FORBES: Euro Crisis Will Only Get Worse And Do Serious Damage To Investors

So mammography is highly ineffective for 40% of women (those with dense breast tissue) who undergo mammographic screening.

FORBES: Beware Overreaching Government Efforts to Detect Breast Cancer

"One of the reasons that diets are so ineffective in producing weight loss for some people is that their bodies adjust to the reduced calories by also reducing their metabolism, so that they are 'defending' their body weight, " says Dr. Alan Saltiel, the lead researcher at the University of Michigan.

CNN: STORY HIGHLIGHTS

This treaty is so ineffective it doesn't even have a practical definition of what constitutes a nuclear test.

CENTERFORSECURITYPOLICY: Center For Security Policy

Most serious of all, deflation can make monetary policy ineffective: nominal interest rates cannot be negative, so real rates can get stuck too high.

ECONOMIST: Could it happen again?