John Maynard Keynes.
Yes, the future economic trends are usually influenced by the economic theories.
No; not according to some economic theories. Yes; according to some economic theories.
removing regulations regarding business practice in the baking industry
removing regulations regarding business practice in the baking industry
Nursing theories affect clinical practice in a very huge way. Most of the nurses will rely on the theories that they have gathered over their training so as to practice their profession.
economic models
Marshall's economic theories, although very elaborate, have been viewed as eclectic and lacking in internal consistency.
GAAP
Religion influenced the application of economic theories in a huge way. In the olden days, people valued religion and would follow whatever guidance religion provided and that is how it gained so much power even in economic theories.
the chronological order of economic theories
Great Depression