The paper tries to show how even a very limited use of the operational technique can be sufficient to reduce to the same group of well defined operations many of the explications and interpretations given by men in their various speculative activities. By doing this, with a particular regards to physics, the author hopes to show also how a broader exploitation of this original technique can provide the scientist and the philosopher with a more fruitful awareness of their own work, its historical antecedents and its possible developments or alternatives.