Just a nit for accuracy, but the implication that "the Ember resolver will load code when you store it in App.Foo(Controller|View|Route|...)`" eagerly is not true. I believe the author use an HTML comment to comment out his usage and not a handlebars comment, so the code was still being run (just hidden behind html comments).

But regardless, Ember will not load everything in the App. namespace blindly- it will wait until that item is required, then try to load it.

This is your helpful Ember #protip for the day. :-p