A few weeks ago, bankers were cautiously predicting that their prime ratethe interest charge on loans to the most creditworthy corporationswould top out at 9½% in the fall. Last week the prime hit that level much earlier, and no one voiced the slightest belief that that would end the dizzying ascent from 6% in January. Bankers and economists are now forecasting a series of further rises to 10½% or even an unheard-of 11%.
The major reason is that the climb in the prime has not yet discouraged ravenous loan demand from business. No reason why it should, either: strangely enough, borrowing at...