This person doesn't have to be a geek, but does need to be fluent in both tech talk and managementese. He or she also needs to master the delicate skill of telling the bosses no without offending them, says Adriana Zona, director of IT for Minco, a manufacturer of components for military and medical facilities. "You can't tell the business side an idea is nonsense if they're the ones who came up with it," she says. "I call these people the bouncers or gatekeepers -- they guard IT from irresponsible requests. Half of their job is saying no in a friendly way. Every IT department is bombarded with these kinds of requests. If you did them all, you wouldn't be doing the right thing for your company."

Velocities in ordinary life which to us might seem incredibly fast have only a miniscule relativistic effect. For example, orbital velocity (5 miles per second) produces a relativistic factor of change of only 1.000000000360219. Travelling at 93,141.1985 miles per second (half the speed of light) produces a factor of 1.1547005383792517. Here the velocity is incredibly fast and yet the change is still quite small. At .9 times the speed of light, the factor becomes 2.294157338705618. Finally, the effects of relativity become significant.