Many economists fear that another big increase could slow the economy too much.
Some economists fear that in the Soviet case this could mean high inflation.
Too much, economists fear, to keep a lid on inflation.
Economists fear that there may eventually be global shortage of capital as a result.
Such an increase, many economists fear, would spark inflation and slow the economy even further.
Indeed, some economists fear the United States economy is moving up too fast.
There are several possible causes - some economists fear the country's housing market could collapse.
Still, other sectors have not followed housing down, as many economists had feared.
Some economists, though, fear that the costs of supporting the elderly will prove too much for future workers.
Moreover, with interest rates going up, many economists fear a sharp drop in construction.