I don’t understand. Prop drilling or global state libraries like Redux don’t change the fact that the HTML of your site is a function of its inputs. Those are j

I don’t understand. Prop drilling or global state libraries like Redux don’t change the fact that the HTML of your site is a function of its inputs. Those are just two different ways to implement this concept of the HTML being a function of inputs. Use your example of the icon that’s green if you’re authenticated. With React (regardless of whether you’re prop drilling or using something like Redux and context), you just update your state with isAuthenticated: true and the changes to green. There should only be one way to set that Boolean, and the icon will update regardless of where that Boolean is set. That’s all that’s meant by this concept of HTML being a function of inputs.