 The Manual of Reason (TS 85–88) reports the usual Nyāya view that there are four types of absence: prior nonexistence (prāgabhāva); posterior nonexistence or ‘destruction’ (dhvaṃsa); ‘constant’ or ‘absolute’ absence (atyantābhāva); and difference (anyonyābhāva). Of these, the first two refer to possible temporal states of a transient object. Suppose we represent the temporal duration of a person A by the following line (assuming that he lived between 1650 and 1750):