Humans created that tool, that language, that consists of axioms and their implications. Mathematics do a good job of communicating the behavior of physical phenomena. In some instances, pure mathematical areas have been found to describe some aspect of reality, only years after having been studied by mathematicians. Mathematics, as a concept, is a closed system where deduction is the key method of reasonning. My question: How is it that mathematics and and the physical reality agree with each other ? A proper definition of those two concepts might have to be established if we are to proceed to answer my question.