Rhythm requires poetic sections

This is a proposed as an absolute (implicational) universal, and comes from Fabb and Halle (Meter): Where a text has a sustained regular rhythm, it is also divided into sections of determinate length. Texts with a regular rhythm (sustained over a long stretch of the text) are called metrical. The rhythm need not be periodic, and can vary; it is regular in the sense that it includes a range of variations which are overall subject to a set of rules. In other words, metres are found in poems, defined as texts which are divided into poetic sections. The following definition is from Fabb.