Science is supposed to take place by the use of the “Scientific Method” defined in the following way.
THE FREE DICTIONARY:
“The principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to demonstrate the truth or falseness of the hypothesis, and a conclusion that validates or modifies the hypothesis.”
OXFORD ENGLISH DICTIONARY
“a method or procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.
For most of us the scientific method is what is described in official scientific publications. Yet PB Medawar in his “Is the Scientific Paper a Fraud?” argues that:
“The scientific paper in its orthodox form does embody a totally mistaken conception, even a travesty, of the nature of scientific thought. The conception underlying this style of scientific writing is that scientific discovery is an inductive process. What induction implies in its cruder form is roughly speaking this: scientific discovery, or the formulation of scientific theory, starts with the unvarnished and unembroidered evidence of the senses. It starts with simple observation – simple, unbiased, unprejudiced, naive, or innocent observation – and out of this sensory evidence, embodied in the form of simple propositions or declaration of fact, generalizations will grow up and take shape, almost as if some process of crystallization or condensation were taking place
The theory underlying the inductive method cannot be sustained. Let me give three good reasons why not. In the first place, the starting point of induction, naive observation, innocent observation, is a mere philosophic fiction. There is no such thing as unprejudiced observation. Every act of observation we make is biased. What we see or otherwise sense is a function of what we have seen or sensed in the past”.
The procedure described by logicians as “inductive reasoning” may be shown diagrammatically as follows:
In this procedure “observation” comes first. The hypothesis and then the theory arise from the observations. The validity of the theory depends on the efforts placed in its modification from future observations.