Astronomers use math all the time. One way it is used is when we look at objects in the sky with a telescope. The camera that is attached to the telescope basically records a series of numbers – those numbers might correspond to how much light different objects in the sky are emitting, what type of light, etc.

The Mathematical Universe Hypothesis implies that we live in a relational reality, in the sense that the properties of the world around us stem not from properties of its ultimate building blocks, but from the relations between these building blocks.

In Tegmark’s view, everything in the universe — humans included — is part of a mathematical structure. All matter is made up of particles, which have properties such as charge and spin, but these properties are purely mathematical, he says.

Not all of mathematics is objective. In fact, most of mathematics is subjective as much of it pertains to functions, numbers, and sets. But mathematical logic has to hold true as it is bound by the law of causality. Mathematics is “objective” once axioms are accepted.

Calculus is the study of how things change. It provides a framework for modeling systems in which there is change, and a way to deduce the predictions of such models.

It can help doctors understand the chemical reactions that occur in the body over time as well as the body’s evolving relationship to different medical devices. Calculus can also help doctors understand movements that may have inflicted injury on the body as well as the movement of the joints.

Calculus and statistics are used in the medical profession in fields ranging from measuring kidney function to analyzing medical images to diagnosing diabetes. Clearly, mathematics is vital to the medical profession.