👉 In computer science, "stales" is a concept that refers to the difference between the current state of an object and its previous state. Specifically, it's used in programming to track changes made to the object's properties or data structures over time. Imagine you have a piece of code that updates a list of items (like fruits) with new ones. You might want to keep track of which item was added first and how long ago it was added so you can remember when to update your list