Even the cat example is not possible because no macroscopic object can be
shielded from the geometry of spacetime. Supposed it could be shield. Well. We
would be in ghost smeared state too. This is obvious because there is no
geometry of spacetime inside the box, to define positions, so no positions would
exist. Hence the person would describe the experience as living in limbo or
ghost-like like in dreamy state where no definite things occur. This is possible isnt it.