To tighten or not to tighten – that is the question. It is one to which policymakers have started changing their answers. Are they right to do so? That is the issue addressed in the Financial Times this week, echoing the fierce debates of the 1930s. If arguments for tightening are correct, failure to do so would bring fiscal and financial shocks in some of the world's most important countries. If arguments for tightening are false, decisions to do so threaten recovery and might trigger further financial shocks.

Where are the policymakers? The declaration after the Toronto summit of the Group of 20 leading nations, stated: “There is a risk that synchronised fiscal adjustment across several major economies could adversely impact the recovery. There is also a risk that the failure to implement consolidation where necessary would undermine confidence and hamper growth. Reflecting this balance, advanced economies have committed to fiscal plans that will at least halve deficits by 2013 and stabilise or reduce government debt-to-gross domestic product ratios by 2016.”

This language is notably more cautious than that of the Pittsburgh summit of September 2009. That stated boldly: “We pledge today to sustain our strong policy response until a durable recovery is secured. We will act to ensure that when growth returns, jobs do too. We will avoid any premature withdrawal of stimulus. At the same time, we will prepare our exit strategies and, when the time is right, withdraw our extraordinary policy support in a co-operative and co-ordinated way, maintaining our commitment to fiscal responsibility.”