ELI5: Explain Like I'm 5

Building block model

The building block model is like playing with colorful blocks - each block has its own unique shape and color, but they can be put together in different ways to create different things. Just like how with blocks, we can create a castle, a tower or a bridge, with the building block model, we can create complex systems by combining smaller parts.

In this model, we break down complex systems into smaller, more manageable parts or modules, which are like individual blocks. Each module is designed to perform a specific function or task, just like how each block has a unique shape and size.

Once we have these individual modules or blocks, we can combine them in different ways to create a larger and more complex system - this is like building with blocks where we can use different combinations of blocks to build different things.

In the building block model, the modules or blocks are designed to be re-usable and interchangeable. This means that if we need to change or modify one part of the system, we can do it easily without affecting the other parts. It's like how we can take apart and rearrange blocks to make a different structure.

Overall, the building block model helps us to create complex systems that are easy to design, modify and maintain by breaking them down into smaller, simpler parts or modules, just like playing with blocks!