👉 Cascading is a programming concept that refers to the process of processing data in a series of steps, where each step involves applying an operation on the previous one. In other words, it's like going from one point to another in a sequence without actually leaving the same place. For example, if you have two lists: `list1` and `list2`, and you want to combine them into one list, the process would be something like this: ``` list1 = [1