Reality of Phenomenal Becoming

In the current debate on the nature of time one can identify two competing positions: the eternalist (B-series) and the Aristotelian (A-series) position. Which is the adequate one? I argue for the reality of becoming (A-series) on the basis of the experience, undeniable even for an eternalist, of the change of appearance in consciousness. I begin with formal characterizations of the A-theory and the B-theory on the general phenomenon of becoming. Th en, I analyse the notion of change of appearing to consciousness. It turns out that it is not possible to provide an account of it in B-theoretical terms. For at least one state of aff airs p of phenomenal nature it is certain that the reality of becoming is given: A(before, p) ∧ ¬A(now, p).