Summary: Financial markets closed out the week with yet another head-spinning day, with one of the main indexes, the S&P 500, plunging for almost three hours into bear market territory, signifying a drop of 20 percent or more from its prior record. Jason Furman, an economist at the Harvard Kennedy School who served as a top adviser to President Obama, joins Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders
