You are more responsible than you realize

You have more capital than you think.

Senior executives typically delegate the responsibility for managing a firm's derivatives portfolio to in-house financial experts and the company's financial advisers. That's a strategic blunder, argues this Nobel laureate, because the inventiveness of modern financial markets makes it possible for companies to double or even triple their capacity to invest in their strategic assets and compete...

There are more strategy-proof procedures than you think

With as few as eight individuals and five alternatives, there are 561, 304, 372, 286, 875, 579, 077, 983 strategy-proof social choice rules. © 2012 Elsevier B.V. All rights reserved. The Gibbard–Satterthwaite theorem, now almost 30 years old, has become a staple of microeconomic theory, social choice theory, and mechanism design (Gibbard, 1973; Satterthwaite, 1975). Everyone understands that th...

Friendship Paradox Redux: Your Friends Are More Interesting Than You

Feld’s friendship paradox states that “your friends have more friends than you, on average.” This paradox arises because extremely popular people, despite being rare, are overrepresented when averaging over friends. Using a sample of the Twitter firehose, we confirm that the friendship paradox holds for >98% of Twitter users. Because of the directed nature of the follower graph on Twitter, we a...

You are worth more than what you weigh: preventing eating disorders.

Are You Responsible for Your Hormones?