Amartya Sen

TL;DR: The generalized Chaplygin gas (GCG) model as mentioned in this paper allows for an unified description of the recent accelerated expansion of the universe and the evolution of energy density perturbations.

TL;DR: The authors have published a collection of essays on social choice theory and welfare economics with the purpose of answering a "reply" to the essays included in this special number of essays. But it is not easy to respond adequately to such a rich collection of challenging ideas and contributions, nor to hide the fact that I am delighted and feel tremendously honoured.

TL;DR: The period of intense exploration of conceptual foundations of normative measurement that Tony Atkinson as mentioned in this paper initiated seems to have given way to a relative neglect of conceptual issues, replaced by greater involvement with actual measurement and estimation, applying well-established approaches and measures.

TL;DR: The question that arises most forcefully now concerns the nature of capitalism and whether it needs to be changed as discussed by the authors, and it is now gathering speed at a frightening rate, and many economists are anticipating a full-scale depression, perhaps even one as large as in the 1930s.