In a bid to restore yet more symmetry to the universe, a number of particle physicists are developing a theory called supersymmetry.

ECONOMIST: Particle physics makes sense, but it assumes too much

By developing a general theory of equations, Galois provided the definitive solution to the problem.

ECONOMIST: The history of mathematics

In most developing countries, contraception is in theory available to the indigent either free or at nominal cost through state agencies.

ECONOMIST: Population control

Something in the work or savings ethic, this theory goes, prevents them from fully developing like their Northern or Western neighbors.

FORBES: Waking Dead Capital

Though in theory returns on capital should be much higher in the developing world, where economies remain labour-intensive, in practice the story is more complicated.

ECONOMIST: Don’t blame the savers | The

In theory, members of a unitary board combine two tasks: developing the firm's strategy, in the broadest sense, and ensuring compliance with the law and best practice.

ECONOMIST: America has Sarbanes-Oxley. Britain has Derek Higgs

Going over the basics might help things in theory, but the body of work suggests that the Knicks would benefit more from developing a new approach.

WSJ: Knicks Should Consider Plan B