It is also the becoming-space of the spoken chain - which has been called temporal or linear; a becoming-space which makes possible both writing and every correspondence between speech and writing, every passage from one to the other.
The activity or productivity connoted by the a of différance refers to the generative movement in the play of differences. The latter are neither fallen from the sky nor inscribed once and for all in a closed system, a static structure that a synchronic and taxonomic operation could exhaust. Differences are the effects of transformations, and from this vantage the theme of différance is incompatible with the static, synchronic, taxonomic, ahistoric motifs in the concept of structure.