Common knowledge plays an important role in coordination problems and coordination problems are central to many areas of economic policy. In this paper, I review some common knowledge puzzles culminating in the electronic mail game. These puzzles may seem distant from practical concerns....

The concept of common knowledge concerning higher orders of knowledge has seen exciting new developments in the fields of philosophy, game theory, statistics, economics and cognitive science in the recent decades. Even though information lies at the heart of accounting and capital markets...

The mechanism design literature assumes too much common knowledge of the environment among the players and planner. We relax this assumption by studying implementation on richer type spaces, with more higher order uncertainty. We study the "ex post equivalence" question: When is interim...

The concept of common knowledge concerning higher orders of knowledge has seen exciting new developments in the fields of philosophy, game theory, statistics, economics and cognitive science in the recent decades. Even though information lies at the heart of accounting and capital markets...

We experimentally explore if the absence of dividend anchors (from which investors can backward induct to arrive at the fundamental value) may help us understand the formation of security price bubbles. The fundamental value models assume that the investors (a) form rational expectations, (b)...

Control in organizations can be defined as expectational equilibrium, or correspondence between how the members of an organization behave and how others expect them to behave. Using a contract model of organizations as the base, we use human expectations, common knowledge, and culture to propose...