In a single European market with strict budget constraints the wealthy Germans should dominate.

FORBES: Football and the eurozone crisis

Orion, for example, operates near absolute zero, and previous attempts to build single-photon detectors have suffered similar constraints.

ECONOMIST: Quantum information technology

Offering a tax credit to single people too would make it easier for employers to reduce wages to reflect it, subject to the constraints of any minimum wage.

ECONOMIST: Welfare reform