Think of it as an interactive notebook where you can not only write down notes, but also enter data and code and interact with it. You can then draw nice graphs

Think of it as an interactive notebook where you can not only write down notes, but also enter data and code and interact with it. You can then draw nice graphs of the data and explore it interactively. The nice thing about it is that it is all repeatable and that you can share it with other people/researchers.