On the last Tuesday of each month, the home-building and home-selling industries  wait to see – and sometimes hold their collective breaths – what the widely reported S&P/Case-Shiller Home Price Index tells about the market in the United States.

The index takes half of its name from Robert Shiller, a Yale University economics professor who helped build the model that yields the results that always get widespread attention from the news media.

Fox Business, part of Fox News, interviewed Schiller after the latest report, for October, came out this week.

Asked what could be bad for the market inspite of a somewhat improved U.S. stock market and concumer confidence that eppars to be edging slowly upward, Shiller warned, "The bad scenario would be some collapse in Europe."