I don’t recall about the Shack.
I think I glossed over the esoteric physics stuff as so much conjecture.
I do think ACCORDING TO YOUR FAITH, SO BE IT UNTO YOU
has been minimized even, perhaps, by Kenneth Hagin. That is, I don’t think we have begun to plumb the depths of it’s import, efficacy and applicability.
However, I think that “faith” in “faith” is error.
Faith IN GOD is a must.
FAITH IN ANYTHING APART FROM GOD is a hazard.
When you are born again, do you feel God will allow what you fear to come true to build your faith? Let's say you have a lot of money in the bank and feel secure and are a Christian. If you have fear of losing that money would God possibly allow you loose the money so that you trust only in him?