Under a market system, economic interaction is voluntary.

ECONOMIST: The hubris of the West

Many studies have sought to explain Europe's high unemployment, but theirs is the first to quantify the impact of the interaction of economic shocks with labour-market rigidities over time.

ECONOMIST: A shocking error

If true, this opens up the possibility that tax havens complement onshore jurisdictions rather than substituting for them, and that the interaction between the two increases total economic activity in the world.

ECONOMIST: The less obvious uses of tax havens

There are many technological and economic reasons for this unprecedented explosion of speech and human interaction, but the primary legal reason lies with Sec. 230.

FORBES: The Greatest of All Internet Laws Turns 15

Still, those trying to reform other highly indebted economies on the brink of default will find plenty to chew over in Mr Gilman's account of the toxic interaction between domestic politics and otherwise soundly conceived economic policies.

ECONOMIST: The Russian default

Relevant factors for comprehensive socio-economic risk assessments for ocean acidification impacts will be identified, including interaction effects with other physical, chemical and human sources of ecological stress.

UNESCO: Social and Human Sciences

Given the pattern of political and business interaction over the past century, any new president is likely to inherit the politically induced economic imbalances bequeathed by previous presidents and congresses.

FORBES: Economic Recovery: How Did Successful Presidents Do It?