pregeometry. They considered spacetime itself as part of an explicate order that is connected to an implicate order that they called pre-space. The spacetime manifold and the properties of locality and nonlocality all arise from an order in such pre-space. A. M. Frescura and Hiley suggested that an implicate order could be carried by an algebra, with the explicate order being contained in the various representations of this algebra. In analogy to Alfred North Whitehead's notion of "actual occasion," Bohm considered the notion of moment – a moment being a not entirely localizable event, with events being allowed to overlap and being connected in an overall implicate order: Bohm emphasized the primary role of the implicate order's structure: The explicate order and quantum entanglement Central to Bohm's schema are correlations between observables of entities which seem separated by great distances in the explicate order (such as a particular electron here on earth and an alpha particle in one of the stars in the Abell 1835 galaxy, then a possible candidate for farthest galaxy from Earth known to humans), manifestations of the implicate order. Within quantum theory, there is entanglement of such objects. This view of order necessarily departs from any notion which entails signalling, and therefore causality. The correlation of observables does not imply a causal influence, and in Bohm's schema, the latter represents 'relatively' independent events in spacetime; and therefore explicate order. A common grounding for consciousness and matter The implicate order represents the proposal of a general metaphysical concept in terms of which it is claimed that matter and consciousness might both be understood, in the sense that it is proposed that both matter and consciousness: (i) enfold the structure of the whole within each region, and (ii) involve continuous processes of enfoldment and unfoldment. For example, in the case of matter, entities such as atoms may represent continuous enfoldment and unfoldment which manifests as a relatively stable and autonomous entity that can be observed to follow a relatively well-defined path in spacetime. In the case of consciousness, Bohm pointed toward evidence presented by Karl Pribram that memories may be enfolded within every region of the brain rather than being localized (for example, in particular regions of the brain, cells, or atoms). Bohm went on to say: As in our discussion of matter in general, it is now necessary to go into the question of how in consciousness