On the Comparability of Skin States
To speak of skin states implies the possibility of comparing them.
Comparison requires conditions under which skin states can be treated as identical. These conditions often remain implicit, even though they determine which differences count and which do not.
Skin does not exist outside of time. Its states are embedded in continuous processes that generate subtle shifts, even in the absence of visible events.
Temporal drift does not denote abrupt change, but an ongoing modulation within tissue. Differences emerge not necessarily as new states, but as gradual displacements.
Such displacements do not automatically dissolve a skin state. They do, however, alter the basis on which states are compared. Comparability cannot therefore be taken for granted; it depends on the criteria by which identity is assigned.
Reproducibility, in this context, is less an intrinsic property of skin than a relation between defined assumptions of equality. It relies on stable rules of comparison rather than on fully stable states.
Drift primarily affects the basis of comparison. A skin state may be regarded as persisting while the conditions under which it is considered identical shift imperceptibly.
Under temporal continuity, identity is not directly observed but established through defined criteria. Reproducibility thus emerges not as a fixed characteristic of skin, but as a function of the equality conditions that allow states to be held comparable.