The global financial crisis experience shone a spotlight on the dangers of financial systems that have grown too big too fast. This note reexamines financial deepening, focusing on what emerging markets can learn from the advanced economy experience. It finds that gains for growth and stability from financial deepening remain large for most emerging markets, but there are limits on size and speed. When financial deepening outpaces the strength of the supervisory framework, it leads to excessive risk taking and instability. Encouragingly, the set of regulatory reforms that promote financial depth is essentially the same as those that contribute to greater stability. Better regulation—not necessarily more regulation—thus leads to greater possibilities both for development and stability.

Rethinking Finance in the Face of New Challenges provides an overview of the new research perspectives devoted to financial activity, reconsidering the opposition between orthodox and heterodox schools of finance.

"Financial development increases a country's resilience and boosts economic growth. It mobilizes savings, promotes information sharing, improves resource allocation, and facilitates diversification and management of risk. It also promotes financial stability to the extent that deep and liquid financial systems with diverse instruments help dampen the impact of shocks. But is there a point beyond which the benefits of financial development begin to decline and costs start to rise, and have emerging markets (EMs) reached these limits? This paper takes stock of where EMs are on the stability-growth tradeoff that financial development entails, and considers whether there is further scope for financial development, and how EMs can secure a safe process of financial development."--Executive summary.

Why are financial prices so much more crisis-prone and unstable than real economy prices? Because they are doing different things. Unlike real economy prices, rooted in the real goods and services produced and exchanged, financial prices attempt to value future income flows from financial and capital assets. These valuations fluctuate erratically because expectations of the future fluctuate – and large liquid financial markets can amplify, rather than correct, these effects. The book builds on the insights of economists Frank Knight and John Maynard Keynes, that uncertainty of the future is essential to understand the processes of economic production and capital investment, and adds to this Karl Popper's general explanation of how expectations of an uncertain future are formed and tested through a trial and error process. Rather than relying on fluctuating financial prices to provide a guide to an uncertain future, it suggests a better approach would be to adopt the methods common to other branches of science, and create testable (falsifiable) theories allowing reasonable predictions to be made. In finance, the elements of one such theory could be based on the concept of forecasting yield from capital assets, which is a measurable phenomenon tending towards aggregate and long-term stability, and where there is a plentiful supply of historic data. By methods like this, financial economics could become a branch of science like any other. To buttress this approach, the widely accepted public policy objective of promoting real economy price stability could be widened to include financial price stability.

This new annual publication from the World Bank Group provides an overview and assessment of financial sector development around the world, with particular attention on medium- and low-income countries.

Why are financial prices so much more crisis-prone and unstable than real economy prices? Because they are doing different things. Unlike real economy prices, rooted in the real goods and services produced and exchanged, financial prices attempt to value future income flows from financial and capital assets. These valuations fluctuate erratically because expectations of the future fluctuate - and large liquid financial markets can amplify, rather than correct, these effects. The book builds on the insights of economists Frank Knight and John Maynard Keynes, that uncertainty of the future is essential to understand the processes of economic production and capital investment, and adds to this Karl Popper's general explanation of how expectations of an uncertain future are formed and tested through a trial and error process. Rather than relying on fluctuating financial prices to provide a guide to an uncertain future, it suggests a better approach would be to adopt the methods common to other branches of science, and create testable (falsifiable) theories allowing reasonable predictions to be made. In finance, the elements of one such theory could be based on the concept of forecasting yield from capital assets, which is a measurable phenomenon tending towards aggregate and long-term stability, and where there is a plentiful supply of historic data. By methods like this, financial economics could become a branch of science like any other. To buttress this approach, the widely accepted public policy objective of promoting real economy price stability could be widened to include financial price stability.