 Related to this is the problem that, given that each element can be caused only by a previous element of a corresponding kind (in an immediately preceding moment), there does not seem to be any way for the consciousness, once cut off, to restart. The distinctive, early Yogācāra doctrine of the “store consciousness” (ālayavijñāna) or the “hidden consciousness”—the consciousness that is tucked away in the body—was first introduced to solve these continuity problems. Equally problematic is the same issue in reverse: Without some doctrinal shift there does not seem to be any way that beings born into formless realms, with no bodies, could be reborn among those with physical form. The later, Yogācāra view that everything is only appearance takes care of this, too, by eliminating the need for real physicality. (See the section concerning disproof of invisible physicality.) Vasubandhu sets out these problems in the Treasury of the Abhidharma without resolving them; when he writes from a Yogācāra perspective, he resolves them with recourse to the store consciousness and appearance-only.