"Ember does a lot of behind-the-scenes work to maintain the relationships and connections between objects in your application." Can it be made more clear that this is about elements of the application framework, and not simply "all objects"?

"All of Ember's internal objects and those in your application namespace have references stored in another object named Container" Implies the same as the previous sentence, that any `Ember.Object.create()` is in a container, which is not true.