Some hints concerning the Mathematics effectiveness from the evolutionary biology are proposed, and the unexpected fecundity of ideal concepts is handled with qualitative clues form Category theory. Then, the question of the ontological status of Mathematical entities is investigated, comparing the main philosophical approaches about it, with emphasis on their epistemological aspects. Plus, one tries to show that the concept of intrinsic qualities is misleading, and that for both physical fundamental quantities and methodological assessments, a relational view is inescapable. This leads to a radical position according to which stating the existence of physical and mathematical entities is ultimately the same process. Eventually, some very interesting consequences about information, complexity and mathematical descriptions are illustrated.
Paolo Bellan