In March 2004, following a five-year investigation, the European Commission found Microsoft liable for illegally tying the Windows Media Player to the Windows operating system. This Column evaluates the antitrust issues and the proposed remedy. What is remarkable is that the remedy eliminates...

When we disclose information, we may also communicate information about information. The listener learns not only X but also that the speaker knows X. And the speaker also learns by speaking (for example, the speaker knows that the listener knows X). In this paper we present a series of examples...

The way things never were -- Good ideas and how to generate them -- Problems in search of solutions -- What would croesus do? taking the perspective of an unconstrained consumer -- Why dont you feel my pain? internalizing the external effects of decision making -- Solutions in search of problems...

"By employing leverage to gain more exposure to stocks when young, individuals can achieve better diversification across time. Using stock data going back to 1871, we show that buying stock on margin when young combined with more conservative investments when older stochastically dominates...