If the seller explains excess noise by saying "Oh, they are just out of adjustment," suggest that he adjust them for you right there and then, "so you can learn how".
Second, you can adjust them for different situations — tired eyes often need more help — or even different people.
Members of Congress, including Representative Jim McDermott of Washington and Senator Bill Nelson of Florida, both Democrats, have been pushing a measure that would give the Army the authority to pay interest on the payments or adjust them for inflation.
This week, the Fed chairman, Ben S. Bernanke, called on lenders to move more aggressively to reduce the principal on delinquent loans to adjust them for the drop in home prices.
They calculate traditional value-weighted returns, rather than dollar-weighted ones, but they adjust them for a couple of other problems that are known to afflict hedge-fund data — the "survivorship bias" and the "backfill bias".
Thus Republicans are now using the fiscal impasse to try to raise the age for Medicare and reduce Social Security benefits by changing the index used to adjust them for inflation.
