Measuring scientific tools must be considered from the big paradigms of Science and its proceedings. Different points of view by classic authors are shown in this paper, which are strong influences to current science status. It proves an approach to certain research central items like the variable and the concept distinction between quantitative and qualitative methodologies. Finally, it tries to make a classification of the multivariate statistics procedure. The idea is to show the precarious border between Science objectivism and Reality complexity. Noise has been demostrated in the safe Scientific Activity by different authors and contexts, proving that mathematics proceedings are not free of our own human perception