I must note here that people not familiar with scientific research often view a theory as
a speculation or the opposite of fact. For instance, people often say that teachers need to be less
theoretical and more practical or factual in their classroom teaching. However, practice or fact
are not opposites of theory, but in a scientific sense, are essential components needed to test
the validity of a theory. A good scientific theory should be well supported using observed facts
and should also have practical value, while a poorly defined theory tends to be lacking in these
dimensions. Famous organizational research Kurt Lewin once said, “Theory without practice is
sterile; practice without theory is blind.” Hence, both theory and facts (or practice) are
essential for scientific research.