 In a previous video, we saw how lists and strings are similar. Now, let's look at how they're different. The biggest difference is that strings are immutable. We can't put a string axis on the left side of an assignment. However, lists are mutable. When you have a list, you can reassign one of the items by putting the index on the left-hand side of the assignment. You can reassign a slice of the list to a list of equal size or a different size. Let's switch over to a list of words to look at other ways to modify a list. The Dell operator deletes an item from a list and closes up the empty space. You can use Dell with a slice to delete multiple items with this result. The append method lets you add items at the end of the list. The insert method lets you add items at a specific index and all the items from that index on move down to make room for the inserted item. And those are some of the ways you can modify a list.