On the other hand, short-term predictions, on the scale of days to weeks, are often possible.
It is short-term predictions that often leave you with egg on your face.
Several methods are used for short-term prediction of wind generation.
Even with all the computing power available in the Seine, a short-term prediction would run to the end of the universe.
I know it's six years away, but I've found that short-term predictions are too easy to make.
A particular problem in dealing with regions in turmoil is the difficulty of making even short-term predictions.
The 30-year bond has been responding as much to political doubts as to short-term predictions about interest rates.
However, it may be possible to use this dependence to form the basis for short-term predictions of future behaviour.
Alas, while the priests can make useful short-term predictions, over the long term the gods seem to go where they will.
The mixture remains volatile, they say, and short-term predictions are dangerous.