Because of the power and spin imparted on the ball, the shot can follow an unpredictable path to goal and prove difficult to defend against.

But no one can do that with live targets, which fly in much more erratic and unpredictable paths.

Since 2000 Rouse has followed an unpredictable path.

When we wind up taking an especially arduous or unpredictable path, it's more often than not because of some excellent teacher.

"With any type of scientific endeavor or research, it is always an unpredictable path that you will follow," said Bill Hall, a department spokesman.

But the design can also serve as a metaphor for Johnson's personal history - for the restless, unpredictable path his career has taken.

Sir Howard is no stranger to such abrupt changes, having already navigated the unpredictable paths of corporate life himself.

However, levels sometimes add an element of randomness, such as an enemy that randomly appears or that takes an unpredictable path.

Their professional evolution will follow unpredictable paths and they will need a broad range of general skills in order to adjust.

At the same time, pure research followed an unforeseen, and unpredictable path for 50 years of revolutionary advances.