Good evening. It is a pleasure to be at the LSE and an honour to share the podium with Amartya Sen. Professor Sen is rightly recognised for his many contributions, not least to welfare economics and social choice theory. He has posed, and in many cases answered, some of the most fundamental questions facing economists. For example, given the diversity of people’s preferences, is it possible to arrive at coherent aggregative judgements about how society is arranged? If there are as many preferences as there are people, is reasonable social choice possible at all? And how do we value public goods? His work underscores ... (full story)