Final answer:
In Deleuze's philosophy, actualization comes from the virtual through a process of differentiation and actualization, but not in a predetermined manner. The Deleuzian conception allows for multiple realities rooted in different actualizations of potentialities.
Step-by-step explanation:
In Gilles Deleuze's philosophy, the concept of the virtual does not imply that the actual must always be linearly actualized from the virtual. Deleuze's notion of virtuality involves a complex interplay of potentialities that have an actualizing tendency but are not predetermined. The virtual encompasses a realm of potential that becomes actual through a process of differentiation and actualization.
In post-modernist thinking, the recognition of multiple viewpoints and expressions of reality leads to the conception of multiple realities, or in Deleuzian terms, the multiplicity of virtualities. The traditional metaphysical conceptions involving static substances are replaced with a dynamic network of events and relations, echoing the process metaphysics view of reality as a fabric of interweaving actual entities and eternal objects, the latter hinting at Forms or universals.
The Aristotelian principles of potentiality and actuality are echoed in this thought; however, Deleuze adds a layer of complexity by conceiving an open-ended process of becoming rather than a linear progression from potential to actual. Thus, the actual is not always a direct realization of the virtual but may arise from an intricate and evolving set of conditions.