This argument is famously expounded in the "Anattalakkhana Sutta". According to this text, the apparently fixed self is merely the result of identification with the temporary aggregates, the changing processes making up an individual human being. In this view a 'person' is only a convenient nominal designation on a certain grouping of processes and characteristics, and an 'individual' is a conceptual construction overlaid upon a stream of experiences just like a chariot is merely a conventional designation for the parts of a chariot and how they are put together. The foundation of this argument is empiricist, for it is based on the fact that all we observe is subject to change, especially everything observed when looking inwardly in meditation.