Some analysts have been predicting a collapse in sales for the US economy. One prominent economist announced in a recent round of TV interviews that sales generally were in the process of “rolling over.” On that assumption, the economy is in recession, he explained. But a funny thing happened on the way to the collapse: sales have held up, and even turned up. Yesterday’s November update on wholesale trade figures is the latest data point that contradicts the pessimistic view on the macro trend.