David Roche's analysis of deflationary pressure on world markets brought about by China's seemingly endless pool of cheap manufacturing labor is a good one (" Tributary to the river of deflation, " Sept. 16).

FORBES: A river runs deep

Supposedly, analysts are another force for good corporate governance, putting pressure on management by providing investors with independent analysis of a firm's accounts and prospects.

ECONOMIST: Only if it is properly governed

But this analysis means there may be some degree of economic pressure as well.

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Analysis in the 70s and 80s variously suggested that high pressure, high temperature and low humidity were associated with positive emotions - basically, nice weather seemed to put people in a good mood.

BBC: Does sunshine make us happier?

In this analysis, we examined the dual threat of alternative platform adoption and competitor pricing pressure, and also mentioned the potential for increased marketing spending.

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Sporting built-in pressure sensors, an LCD display, and what we're assuming is a powerful sleep analysis engine, the pillow seems to do little more than count the number of times your head moves around at night, displaying the resulting data when you wake up in the morning.

ENGADGET: Japanese pillow offers napping advice