how about this as a working proposition:
0.4
rhythm is not a thing, not a form, not even a pattern, but a
sense ?
(thus, a special case of temporality, which is the sense of dynamic, change, …)
added to
0.1
rhythm is not sonic
0.2
rhythmic is not unidimensional
0.3
rhythm is not metrically regular, or metric at all.
after Goldsmiths talk: Rhythm and Textural Temporality: An Approach to Experience Without a Subject and Duration as an Effect