Everything in this universe is a system. We have solar systems, subatomic systems, planetary systems, molecular systems like molecules that behave with different rules, the biosphere, the atmosphere, the stratosphere, all of these are systems. In nature we have ecosystems, like the jungle, the sea, the ocean has ecosystems; it has different things and different participants that all behave together to make it balance and run. We humans we have social systems, economic system, we have rules and laws. Within the different companies there's systems, like benefit systems, all sorts of systems everywhere.
Even within ourselves we've got your respiratory system, digestive system, skeletal system, etc.
The internet is a system, we have technological systems. I think you get the point.
So what is a system? Well, a system, is just a collection of units that interact and mutually influence each other. It's just a collection of things that all interconnect with each other and they all influence and interact with each other to produce a whole. It's a whole that does something made up of different things.
Systems theory looks at all the components and how they interconnect with each other and how that affects the whole. A systems thinker, sees the whole instead of just the parts. They notice the structure of the whole and the relationships and interdependence between all of its parts.
Traditional thinkers, they only look at a part, they just focus on the part and they forget about how it interconnects with other things.
A systems thinker would just understand that most things are systems which are made up of very complex different parts that all interconnect and they can understand how the whole thing works.
That's how I believe someone should approach pretty much everything, but also how someone should approach paid advertising. They need to understand all parts of the system how they are interconnected and how they all affect each other, taking in consideration not only the technicalities and the service delivery part of making the ads but also their clients perspective, product or service, brand, struggles, and their systems too in order to create a predictable and efficient system that brings sales and growth.