The bankers will perhaps let us in on their game in on-the-record Davos sessions (most of the good ones are closed to the press) with European Central Bank president Mario Draghi, International Monetary Fund managing director Christine Lagarde, former Treasury Secretary Larry Summers and World Bank President Jim Yong Kim, and Nobelist Columbia professor Joseph Stiglitz.

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The cameras are placed behind the bowler in the six nets, and along with two others on the side, record the training sessions.

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Trained "facilitators" will help record 40-minute sessions.

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