Loose coupling

Hello little one! Today we're going to learn about something called "loose coupling".

Imagine you have two toys, a car and a truck. The car has a lot of parts, like wheels, doors, and seats, and the truck has different parts, like a big bed and a trailer hitch. Now imagine that you want to attach the car to the back of the truck so it can be hauled away.

If you put the car on top of the truck and glue it down, the two toys are tightly coupled. The car and truck can't be separated easily and it's hard to change either one without affecting the other. This makes it hard to play with them separately - if you want to drive the car, you have to drag the whole truck along with it.

But if you attach the car to the truck with a string or some hooks, they are loosely coupled. This means that they are connected, but they can also be disconnected easily. You can take the car off the truck and play with it by itself, or you can leave it attached and play with both of them together.

Loosely coupled toys are more versatile and can be used in different ways. Similarly, in computer programming, loosely coupled systems are ones where different parts of the program are connected in a way that allows them to be changed without affecting each other too much. This makes it easier to update and maintain the program over time.

So, in short, loose coupling is when two things are connected, but also easy to separate and change independently.