Q1) I still don't understand how RecyclerAdapter works…

A) That's because we haven't really discussed it. The reason we have not discussed the behind-the-scenes details is because we don't need to know them. If we override the required methods, as we have just seen, everything will work. This is how RecyclerAdapter and most other classes we use are meant to be—hidden implementation with public methods to expose the necessary functionality.

Q2) I feel like I need to know what is going on inside RecyclerAdapter and other classes as well.

A) It is true that there are more details for RecyclerAdapter (and almost every class that we use in this book) that we don't have the space to discuss. It is good practice to read the official documentation of the classes you use. You can read more about it here: https://developer.android.com/reference/android/support/v7/widget/RecyclerView.Adapter.