EU. Yet forging a common policy is hard, and centre-right governments may prove no better than have those of the left at balancing the benefits offered by the free movement of labour against voters' fears, often irrational, about threats to national identity.

ECONOMIST: France and Europe

Then we take advantage of this behavior, this often temporary irrational behavior, by buying company stock before other investors adjust their prior expectations to reflect those new fundamentals.

FORBES: How to Pick International Small Caps

"Poaching has too often resulted in irrational bonus bidding wars that harm the entire industry by forcing firms to continually increase bonus levels and leading to a compensation system that is simply a one-way ratchet up, " the report says.

FORBES: Wall Street

By the way, the pricing of institutional investment advisory services is also irrational and often excessive.

FORBES: 2003: A Year of Awakening (December 3, 2003 )

Fisher believes irrational fears often grab hold early in a big bull market.

FORBES: Magazine Article

This volatility, which is often swayed by the irrational exuberance and pessimism of investors, can create havoc with the economy unless domestic financial systems are robust and private capital inflows are properly managed.

CNN: VIEWPOINT

The underlying reasons seem to be that investors, often self-directed, are impatient and irrational.

FORBES: Bad Rap For Buy and Hold

For De Schutter, the fact that food is often produced thousands of miles away from where most people live represents an irrational system, both from an ecologic and economic perspective.

CNN: Futuristic farm shop grows food in synthetic veg patch