And after three comics of things going as Grace planned and change blindness being successful, we're getting in to the twist I was talking about earlier.
It is not secret. IT IS NOT SAFE! Oh, Frodo Baggins, it's all gone wrong, and we're all out of potatoes!
Lucky for Grace, this is all non-canon. Nonetheless, Justin has the sudden impulse to say "I told you so" and knows not why.