The ultra-wide aperture is a pleasure to use: backgrounds just a few feet behind the subject become soft pillows of blur.

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And no matter what your feeling are about Microsoft, it's hard to argue that the Vista Media Center isn't a pleasure to use.

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Sure, it's got an unbelievably long, non-detachable wire sticking out of it, but its build quality is top notch and its ultra-clicky face buttons are a pleasure to use.

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The exhibition, organized in four sections based on patterns of land use: Farms, Pleasure Grounds, Suburbs, and City, is scheduled to run through January 21, 2013.

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Whether people would use this for work or pleasure differs from day to day.

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Similarly, the EPA seems to derive perverse pleasure from fining refiners for failing to use nonexistent fuels.

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"If I don't use it to have more pleasure, to improve my game, then I will just forget it because it was just a gadget, " he said.

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And if you have only a cell phone, which you use partly for work and partly for pleasure?

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Dacher Keltner, a psychology professor at University of California, Berkeley, says studies have shown that people who use Botox to hide lines on their face feel less pleasure in response to subtle things around them and aren't able to read other people's emotions as well.

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Sir Richard's intention is to use the spaceship to carry fare-paying passengers on short pleasure rides above the Earth's atmosphere.

BBC: Science correspondent, BBC News