1.   And to the extent that a stronger yen means that corporations must work harder to eke out profits, it keeps the pressure on them to be more efficient.

2.   A lower yen means stock prices should rise, regardless of the relative performance of the economy or corporate profits.

3.   A weaker yen means fewer dollars when the company converts its earnings from Japanese operations.

4.   A stronger yen means that Japanese exports become more expensive, leaving room for Korean exports to outbid their Japanese competitors.

5.   A weaker yen means dollar profits are more valuable when brought home, and makes Japanese goods more competitive abroad.

6.   A weaker yen means that Japanese goods will sell here cheaper than now.

7.   A weak yen means foreign investors get less when they convert their profits back into their home currency.

8.   A weakening yen means that companies like Toyota and Honda can make more profit, in yen, without increasing prices in dollars.

9.   About three years ago, luxury-car leasing began to boom, especially at Japanese car companies where a strong yen meant high prices in America.

10.   Concerns like Samsung Electronics, Daewoo and Pohang Iron and Steel compete head to head with Japanese companies, and the cheaper yen means much stiffer competition.