optimism and pessimism
TRANSCRIPT
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7/28/2019 Optimism and Pessimism.
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7/28/2019 Optimism and Pessimism.
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7/28/2019 Optimism and Pessimism.
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TRANSCRIPT
7/28/2019 Optimism and Pessimism.
1/3
7/28/2019 Optimism and Pessimism.
2/3
7/28/2019 Optimism and Pessimism.
3/3