Greg Davis, CIO of Vanguard, on no-fee funds, the economy, and current investment strategy. Steve Englander, Global Head of G-10 FX Research for Standard Charter Bank, and a Bloomberg Opinion columnist, on the China yuan. Amir Sufi, Professor of Economics and Public Policy at the Chicago Booth School, on why more leverage leads to slower future growth and increases the likelihood of a crash. Tom Gimbel, CEO of LaSalle Network, on why wages stay down in the best job market he's ever seen.

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