Turning to Data, he said, "Commander, do your best to run some long-range projections on the atmospheric conversion process.

Social Security's key long-range projection is that, over 75 years, it will come up short by an average of 1.89 percent of payroll.

Some long-range projections are even more dire, threatening not only the shortening of the maple season, but also the disappearance of most maples from this region.

Democrats today seized on the uncertainty of long-range projections to argue against the large tax cut President Bush is proposing.

But the real difficulty is that our long-range projections are so vague.

The unanswerable question of immigration illustrates the difficulty of making long-range projections about the system's financing.

We have a budget for the current year, but nobody here does any long-range projections.

Utilities also found that they had overestimated power demand for the early 1980's; smaller plants, more quickly built, do not require such accurate long-range projections.

But Marilyn Moon, an economist and former Medicare trustee, said she had little confidence in such long-range projections.

Because of its extremely high speed, light is only slightly affected by gravity, so that long-range projection requires little compensation.