In doing calculations, it is often convenient to collect together several objects, and treat them as a single entity.
Lists give you a way to make collections of objects in
Mathematica. As you will see later, lists are very important and general structures in
Mathematica.
A list such as
{3, 5, 1} is a collection of three objects. But in many ways, you can treat the whole list as a single object. You can, for example, do arithmetic on the whole list at once, or assign the whole list to be the value of a variable.
Just as you can set variables to be numbers, so also you can set them to be lists.
