Mathematics is the 3rd STEAM Skill

Math is an idealistic understanding of things as they are in nature.  A perfect example of math imitating nature is the Bose Integral.  

The Bose Integral and Reimann Zeta Function and Gamma Function are essential in the Theory of Everything or Science of Everything.

 Math is perfect!  Math is a tool to solve problems.   Math solutions are solutions in their pure form form.  The other STEAM Skills can realized the pure math in a physical form through Engineering.  Science in it's pure form as a theory cannot be realized without Math. 

The Math is not required to understand the physics of science or the natural word but if you want to quantify it Math is essential for Universal understanding of the parameters involved in problem solving.