Scientific method
mathematical and experimental techniques employed in the natural sciences; more specifically, techniques used in the construction and testing of scientific hypotheses / From Wikipedia, the free encyclopedia
The scientific method refers to ways to get facts, correct errors and mistakes, and test theories.
The Oxford English Dictionary says that scientific method is: "a method or procedure that has characterized natural science since the 17th century". It is observation, measurement, and experiment, plus the formulation, testing, and modification of hypotheses.[1]
A scientist gathers empirical and measurable evidence, and uses sound reasoning.[2]
New knowledge often needs adjusting, or fitting into, previous knowledge.[3]