Introduction ‒ Ten long years of crisis[Introduction - Dix longues années de crise]

The crisis celebrates its tenth anniversary, offering economists a lesson in modesty and a great opportunity to take a new look at their understanding of theworld. The effect of a zero lower bound on interest rates on the efficiency of economic policies, the Keynesian multiplier measure, the issue of the growth slowdown being a cause or consequence of the crisis, the effect of rising uncertainties on households' and firms' behaviour, the effectiveness of macro-prudential stabilisation, the impact of inequalities on the functioning of the credit market, the way in which the coordi- nation of macro-economic policies in Europe is designed and promoted: all these crucial questions are part of the economists' research programme, and this special issue offers a rich review of the progress already achieved.