"Hidden" isn't the same as implicit. State might be hidden in the sense that it is encapsulated. For example, sometimes we want to treat a text field componen

"Hidden" isn't the same as implicit. State might be hidden in the sense that it is encapsulated. For example, sometimes we want to treat a text field component as just an "editor for a string value," without worrying about the cursor and selection state, or the state of the autocomplete dropdown if there is one, etc. That said, in the fullness of time, you do eventually find yourself wanting access to this state for some purpose or another. Every time you use an HTML input tag, you are using an abstraction over state, and the first time you need access to the input element's cursor and selection, you realize you've been pretending the element had less state than it had, which is a pretty useful thing to do. If I can write a form component that needs an "editor for a string" component, specified as a type, and fill that need with a "fancy editor for a string" component that has a more elaborate model that I can abstract away, then I think we're in business, but I can't quite picture how that would work.