Dual citizens may have double the responsibilities though too.

BBC: The equation of dual citizenship

The uncanny fusion of actual and virtual space utilizes dual stereoscopic projections, mirrors, a double-sided projection and game engine software customized by the artists.

ENGADGET: Museum of The Moving Image plans multi-million dollar updates with HD, 3D

The dual-core Power6 chip boasts a top speed of 4.7 gigahertz, double that of IBM's previous Power5 and represents a next generation processor to the PowerPC, the chip that was previously used in Apple's Macintosh computers.

FORBES: Magazine Article

The dual-core Power6 chip boasts a top speed of 4.7 gigahertz, double that of IBM's previous Power5 and represents a next generation processor to the PowerPC, the chip that was previously used in Apple (nasdaq: AAPL - news - people )'s Macintosh computers.

FORBES: IBM Launches Faster, Cheaper Chip

In addition, the desktop grade, dual-core 1.8GHz Atom D525 processor inside the Eee PC 1215N also provides about double the speed and, as we said before, the 12.1-inch Eee PC certainly feels faster in everyday use to us.

ENGADGET: HP Mini 5103 with dual-core Atom N550 performance review

The Olympus STYLUS XZ-2 is packed with additional technologies including DUAL IS, which combines with high-sensitivity shooting to reduce camera shake and subject blur, providing double image stabilization.

ENGADGET: Olympus Stylus XZ-2 is a digital compact stuck in a mirrorless camera's body, we go hands-on