  Do we have two kinds of reality: physical and mathematical? What is the role
of mathematics in physics? These fundamental questions have intrigued original
and brilliant minds since ancient times. A recent article (Aharonov, Cohen and
Oaknin, arXiv:1902.08798) offers a viewpoint on the use of abstract mathematics
in quantum theory. They argue that, in some cases, it may result into a paradox
focusing on an example in quantum mechanics regarding
Aharonov-Bergmann-Lebowitz (ABL) rule. In this comment we discuss three issues:
theory reduction and approximation, origin of a paradox, and the reality of
time. It is pointed out that paradoxes appear even in mathematics; we explain
them as the results of the acceptance of pure logical artifacts. In physics
too, the impact of the so called quantum and relativity revolutions, have led
to the emergence of counter-intuitive and mysterious notion of the physical
reality. The most fundamental change has been on rejecting the reality of time.
A radically new perspective that physics is the language of mathematics is
suggested. The mathematical reality of the natural numbers manifests in the
form of physical time.
