According to John Hartley: "Public writing is produced, circulated, and deciphered or read. Each of these moments in its career has its own frequency:
* The speed of creation: how long a given 'text' of public writing takes to produce
* Frequency of circulation: intervals between publication
* The wavelength of consumption: the period a given text spends in the public domain before being superseded by later 'pulses' of text from the same source."[cit]