Vinod Khosla is best known for shunning convention and taking massive risks on companies he calls 'black swans' -companies with a near-complete chance of failure. But, if they succeed, the world will be forever changed.

In December 2014, Uber held its annual holiday party on an unfurnished floor at its swank, mood-lit headquarters in San Francisco. Employees and investors attended in flamboyant attire from the Roaring '20s and drank at an open bar into the early morning hours.

Padmasree Warrior has been on all the lists. The most powerful women in tech. The most powerful women in the world.

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