The underlying logic is invisible and intangible. If you don't go deep into a certain industry, you will never know. If no one tells you, you can't imagine what the underlying logic is anyway. For example, what is the underlying logic of the Internet industry? To put it bluntly, it is the realization business of traffic.
Related knowledge:
The underlying logic is the "basic law" of the operation of things, that is, Confucius said "ceremony", Laozi said "Tao" and Buddha said "wisdom". Confucianism, Buddhism and Taoism all talk about the underlying logic, which is their greatness.
If you still can't understand other fields, it's because you don't know your own field well enough.
Every field in the world has its own professional knowledge, and the knowledge of this vast world is dazzling, but the underlying logic of these fields is the same. The deeper you dig, the closer you get to the bottom, and the simpler it is, because the bottom logic is "law", and law is all-in-one regardless of industry.
Remember, no matter how traditional you are, as long as you can understand the underlying logic of this industry, you can see through many other industries. Knowledge and skills are divided into fields, while law and essence are not divided into fields.
Once you master the "bottom method" of the world, you can see the whole sea from a drop of water, the whole forest from a tree and the whole desert from a grain of sand. Once you have this ability, you can see through the essence of all kinds of things at a glance and shuttle freely between various fields.