To understand these natural principles we use certain tools and one of the tools is mathematics. And this tool gives an ability for human beings to draw concepts, to draw mental pictures in understanding the underlying logic. So if you want to have a quick answer of how mathematics relates to real world us focus on natural laws and we will see that the natural laws are not, they do not exist in vacuum. There are certain underlying principles which act on certain tangible things we see around. And these principles give rise to a phenomena which we experience in terms of certain laws, right.