Okay kiddo, so central carrier is like the boss of all the workers in a big building. You know how your house has a lot of rooms and you have to walk around to get to different places? Well, in a big building with lots of offices and rooms, it's the same thing.
Central carrier helps to move things around the building by providing a system of pipes or ducts that connect all the different rooms. Think of it like a maze of pipes that runs through the walls and ceilings of the whole place.
These pipes or ducts can carry different things like air, water, or data. For example, heating and cooling systems use ducts to move air around the building and keep it at a comfortable temperature. Or, telephone and internet cables use tiny pipes or wires hidden in the walls to connect all the rooms and allow people to communicate with each other.
So central carrier is like the manager of this whole system since it helps things move around the building efficiently. It's important because without it, things would be a lot more chaotic and it would be much harder to get things done.