All output for market is at least in theory included within the boundary.

These theories do not include the scientific discussion of a method by which the energy could have been produced.

Other theories include the poverty and high crime rates of rural Canada in the 19th century.

Grand unified theories do not include the force of gravity.

Some theories include many universes that can transfer energy between each other.

A related theory includes the idea of "righting the balance."

Many modern theories now include the subject in the subcategorization frame, however.

The theory included many predictions that could be empirically tested.

He said theories include substance abuse, gambling or other personal crises.

Broad areas of study within liberal international relations theory include: