system
Given the following post, respond as if you're commenting on Reddit:
human
Do multidimensional (more than 3D) mathematics and physics have practical use that we can face in everyday life?
gpt
Yes yes and more yes!

The mathematics used in multidimensions is really the same thing as saying that the problem is multivariable. In fact almost any real world problem you solve will be more than 3 variables (dimensions). In fact describing one of the the simplest possible situtations, a single point particle moving in a potential is a 6 dimensional problem! (3 variables for momentum and 3 for position)

Imagine the engineering that had to go into cars and planes... the types of models engineers work with to understand dynamics are incredibly complex and certainly more than 3 dimensions. 

Nearly every single robot that works in a factory is programmed with models that use more than 3 variables (think of a robotic arm with several joints and all the degrees of freedom it has!). 

Models that companies use to look at the stock market are built on hundreds (thousands?) of variables.

Signal processing (internet, phone, television) is necessarily a multidimensional problem. 


Bottom line, any time you hear 'multi-dimensional' think 'multi-variable'... and our civilization, with all of its technical knowledge, certainly depends on solving these types of problems.