For 18 years, people in Spain watched housing prices go only in one direction up.

FORBES: What Spain's Troubles Can Teach The World

If you go too far in one direction or the other, that's a mistake.

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If wormholes exist, they could be adapted to make time machines that send you into the future if you traverse them in one direction, but into the past if you go in the other direction.

CNN: Time travel: Can it really be done?

The undoubted increase in average complexity in the fossil record is, according to this view, an accident of the fact that life started simple and therefore had only one direction to go in.

ECONOMIST: Evolution

But with the selection of a new CEO, Tides seized the opportunity to go in a new direction, and specifically to go along one that follows the path of so many of our clients.

FORBES: Tides: A Convener of Ideas, People, and Investments for Social Change