Put yourself in the Son of God’s shoes (that’s a metaphor, of course). You would only want a change in order to experience something different. If you had a 2021 Ford Taurus 4-door sedan, it’s not likely you would wonder what it would be like to own another same make and equipment, same year, and some model. Likewise, it would not be likely that the Son of God would wonder what it would be like to be in another environment exactly like Heaven so we can believe His wondering was as is described below:
“Into eternity, where all is one, there crept a tiny, mad idea, at which the Son of God remembered not to laugh. In his forgetting did the thought become a serious idea, and possible of both accomplishment and real effects.” (T-27.VIII.6:2-3)
“… earth the … sorry outcome which is Heaven’s opposite in every way.” (ACIM. W-131. 7:4)
The peace of God will only encompass the world when everyone stops exterminating or judging other people. “There is no victor and there is no victory. And truth stands radiant, apart from conflict, untouched and quiet in the peace of GOD” (ACIM T-23.I,7:9-10). 4 “For as Heaven and earth become one, even the real world will vanish from your sight. 8The end of the world is not its destruction but its translation into Heaven.” (ACIM T-11.VIII.1:7-8)