Poetry and Rules

Rhythm has always been an imprinting device, and remains one to this day. That is why so many rules and aphorisms are cast as jingles. (Cross at the green,/Not in between; or Red sky at morning:/Sailor, take warning!; or Early to bed and early to rise/Makes a man healthy, wealthy, and wise.) It is why no medieval treatise on anything from shipbuilding to organum-singing was without rhyming rules. It is why the poet Leonius, who may or may not have been Leonin, gave as his reason for writing his 14,000 lines of biblical verse that it helped ‘‘the mind, which, delighted by the brevity of the poetry and by the song, may hold it more firmly.’’

--- Richard Taruskin. Music from the Earliest Notations to the Sixteenth Century.

https://web.archive.org/web/20061106195350/http://www.oup.com/us/brochure/0195169794/samplechapter.pdf

Imprinting device seems to be the term for overcoming memory limitations of the human brain.

Related to my earlier post https://timelets.dreamwidth.org/966264.html

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Хороший пример плохой аналогии https://rsokolov.livejournal.com/688799.html

Аналогии всегда подозрительны, а тут еще берется пример из совершенно другой области (алкоголизм vs работа), хотя исторически примеров из той же области пруд пруди.

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Formal distinction is definitely a real distinction, expressing as it does the different layers of reality that form or constitute a being. Thus it is called formalis a parte rei or actualis ex natura rei. But it is a minimally real distinction because the two really distinct quiddities are coordinate, together making a single being. Real andy et not numerical, such is the status of for­mal distinction.

G Deleuze. Expressionism...: Spinoza.

We may (have to?) use different formal methods to explore different layers of reality.

upd: it's an old argument between Duns Scotus and Ockham.

https://en.wikipedia.org/wiki/Formal_distinction