Paradigms: A commonly accepted set of scientific ideas
and assumptions:
The
geocentric paradigm
The
heliocentric paradigm
Most new theories are modifications of previous ones.
Occasionally a fundamental change in viewpoint is
required.
Newtonian
Gravity vs. General Relativity
Newtonian
Mechanics vs. Quantum Mechanics
Reference
Thomas
Kuhn: The Structure of Scientific
Revolutions