That's when you notice the gleam of black ice under the thin dusting of snow, mocking the idea of changing direction with anything like the control of a car or a pair of skis.
The commission also said a new approach was needed because the rapid creation of new drugs was changing the market too quickly for the traditional methods used to control it.
It would not be the transformation that Mr Mbeki most often talks about, that of changing from white domination to majority control, but it would almost certainly be the transformation that most South Africans would now put top of their list of desires.
While the degree of control still isn't as precise as a manual transmission, just changing the shift points can make a vehicle feel like it's suddenly grown a much bigger engine.
Even the simple act of replacing batteries in the TV remote control or mouse on the computer, or changing a light bulb can be impossible and incredibly frustrating for them.
FORBES: A Lesson In Keeping An Elderly Parent Safe In Their Own Home
The key to bringing U.S. health care costs under control is not cutting back on the quality of care but changing the way we finance care.
By the end of the year, GetGlue HD will be able to control Direct TV channel-changing.
FORBES: Why Apple Should Make GetGlue HD A Centerpiece Of Its TV Strategy
Did we make any progress in changing attitudes about control value of internal audit, as a very necessary cost of doing business, in the last seven years?
FORBES: The State of Sarbanes-Oxley Compliance According To Protiviti
From the changing ways music is made, distributed and sold to the greater control demanded by artists, the industry of the next decade may hardly resemble that o the last one.
The cover story of the current issue of Forbes is on a subject near and dear to my heart: how the digital age is changing reputation control.
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