The Sarvāstivāda response to the momentariness criticism—that the activities of the four characteristics are sequential—itself undermines momentariness.

The Sarvāstivādins (“advocates of the doctrine that all things exist”) were unique in their stance that the characteristics of conditioned phenomena exist separately as real entities within each moment. Their claim, then, is that all conditioned dharmas—whether past, present, or future—exist as real entities (dravyatas) within the span of any given moment. This induced a host of problems, one of which is that the Sarvāstivāda definition of a moment is difficult to reconcile with its conception a