Even if the process proves protracted, the American economy will eventually recover. Yet even as cyclical issues cease to dominate the economic conversation, it is likely that inequality will move to the forefront.

There is no question that income is distributed substantially more unequally than it was a generation ago, with those at the very top gaining a greater share as even the upper middle class loses ground in relative terms. Those with less skill – especially men who in an earlier era would have worked with their hands – are losing ground not just in relative but also in absolute terms.

These issues frame an important part of the economic debate in this election year. Progressives argue that widening inequality jeopardises the legitimacy of our political and economic system. They argue that a time when the market is generating more inequality is no time to shift tax burdens from those with the highest incomes to the middle class, as has taken place in the past dozen years. And while recognising that innovators such as Apple co-founder Steve Jobs earned their billions providing great value to consumers and making substantial contributions to the US and global economies, they assert that the social value associated with the activities behind many other fortunes, especially in finance, is less apparent.