Many executives worry how long it will take to fill the existing buildings and all but dismiss the need for more construction soon.

And the auto industry is showing surprising signs of short-term health, although executives worry that trouble may be on the way.

But some executives worry that the majors will not give rap artists the special care they need.

Some executives and government officials worry that the new competition rules will conflict with each nation's antitrust rules.

Rather than focusing on the long-term health of their businesses, too many executives worry about share prices and analysts' reactions.

This is one reason why executives worry so much about the value the stock market puts on their shares.

Nonetheless, investors and executives here also worry that new cronies are emerging.

Hardly any chief executive worried about the synergies among all the businesses being accumulated, or whether managers really knew how to run them.

And many longtime executives worry that too many newcomers to technology companies have never seen a truly down market.

Some executives worry that future generations will be frightened away.