reason refers to the objective law of the movement of things, that is, the principle of simple change is not easy.
Number here refers not only to the quantity of things, but also to the existing state of things in a certain time and space.
In short, people's life span will not exceed 2 years, and the point of 2 is a number.
As for the "numerology of fortune telling" you said, I think it is a method to frame (account for) the development trend of the measured things or people, the specific situation of some specific points (numbers), and to explore the reasons (numerology) why these things happen.
For example, Heluo Rational Numbers uses eight characters to simulate a person's fate trend and what may happen at a specific time through a series of deduction of rational numbers.
it's time to clarify your question.