CNBC's Bob Pisani spoke with Arne Noack, Head of Systematic Investment Solutions at DWS Group and Dan Wiener, Chairman of Adviser Investment and editor of The Independent Adviser for Vanguard Investors. They discussed the factors fueling the sharp moves lower - Plus, no red flags coming out of China, everything from weaker retail data and tighter regulation to the fallout from Chinese property giant Evergande. In the 'markets 102' portion of the podcast, Bob continues the conversation with Dan Wiener from Adviser Investment Management.