My claim is: science is a method, it is not doctrine. However, I'm not the one to arrogate the right to define what is and what is not science. The meaning of each term is a matter of social convention, and scientific community agree with E. Kant and Karl Popper that a claim is science provided that it is supported either by a universal and rational proof or it is tested empirically. In addition, Popper requires every scientific claim must be falsifiable.

Nevertheless I will prove my claim. To this end let us consider a theory T. There are three countries, say A, B and C, each of which accepts T by the following methods

A) The country A accepts T because this theory has been voted up by the people.

B) The country B accepts T because it was exposed by a clever man in the past.

C) The country C accepts T because there is a rational proof for it.

In the case of A the doctrine T is a political truth, but it is not a scientific fact. In the case of B the doctrine T is a matter of faith. By contrast, in the case C the theory T is science. Notice, that the same theory can be or not be science depending on the method by means of which it is accepted.

Accordingly, it does not matter what the doctrine T could be, what matters is the acceptance method.

Of course science also deals with non proved claims, but these are regarded as hypotheses and this is why science is universal. To illustrate this claim let us consider two gravitation laws.

Newton's law : M/r^2

Einstein's law:  R_mn - 1/2 R g_mn + ⋀ g_mn = k T_mn

Does Einstein's law reject the Newton's one? Not at all. What Newton says is that the three Kepler's laws can be deduced from the gravitational law M/r^2. and this is proved to be true. The proof is a mathematical one. Even if tomorrow everybody awakes flying in the space, because the gravity vanishes, the three Kepler's laws can be deduced from M/r^2.

Nevertheless if some people makes a dogma from the Newton's law, then this dogma is rejected by Einstein's law, but no dogma is science.

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