Thanks! I think this helps clarify it quite a lot. The use of the word "observed" was a critical part of my misunderstanding, as to me it felt like it was sayin

Thanks! I think this helps clarify it quite a lot. The use of the word "observed" was a critical part of my misunderstanding, as to me it felt like it was saying that by not being observed it was "made up" instead, when really it's more accurate to say that it's part of the model and we know it exists but have a hard time describing it?