In Douglas Adams' 'Hitchhiker's Guide to Galaxy', a supercomputer, asked to calculate the answer to 'life, the universe and everything' comes out with the rather enigmatic 'forty-two', and nobody quite understands what it means.
Trying to calculate the answer to 'versification, feet and everything' instead has two main advantages: you can do it with an elderly 8086, and the answer is 'twelve', which, you'll admit, is a much friendlier number.
Ah, and by the way, you have this page to explain why.
Stress Patterns and Binary Numbers
In a paragraph of the last chapter of this guide, you can see that stress patterns stick to one's mind and can alone form the skeleton of a poetic composition. With the name 'stress pattern' of a line, we simply mean a representation of it in terms of which syllables carry a stress and which don't (in the remainder, we will indicate a syllable with S if it carries a stress, and with U otherwise). I.e., take the famous Hamlet line:
Resuming our main thread, it should be obvious to anyone familiar with mathematics that stress patterns can be associated to binary numbers, which makes it easier to count how many possible stress patterns fit in the definition of a type of verse. But before we do anything of the sort, we ought to state some rules.
Valid and Distinct Patterns
We will assume, based on common usage in verse, and on what said in the versification chapter, the validity of the following:
History and Mathematics
Back in the good old days of the Lai, when long poems were written syllabically, it was usually in octasyllables. This was true for French (see, e.g., Jean Renard) and English (see, e.g. 'The Owl and the Nightingale'); in Italian and Provençal archaic narrative poems were made of even shorter lines, but these languages developed more complex verses more rapidly. Now, let us apply the rules above to the octasyllable, and see how many possible stress patterns we obtain. One could easily do that by hand, but the Present Author being a bit of a geek, he wrote a specific program to do it; the result of the count is 13: should you be in doubt, you can go and check for yourself.
Now, keeping this number in mind, we can consider the different development in different languages. Italian developed the endecasillabo, which is actually a collective name for two verses, the e. a minore and the e. a majore, which are always used together. Let's apply the program again, and count the possible stress patterns for both types: it turns out there are six for each (diffident people can verify it), total 12.
The two numbers are suspiciously similar; let's apply the same program to the Gallic decasyllable: amazingly enough, the stress patterns are, again, 12.
If we could do the same for all common types of verse, we would have pretty much proven our point. Unfortunately, poetry is not a particularly rigorous science: where it is widespread and of good quality, which seldom happens, it tends to fall into rational habits, otherwise, it is subject to the whims of noblemen with too much time on their hands, who write tomes and tomes of nonsensical poetry and become classics: do the names 'Charles d'Orleans' and 'Alfred, lord Tennyson' ring a bell?
Keeping this in mind, let's apply the program to the iambic pentameter and to the alexandrine; the counts are far away, from the Holy Twelve and from each other: 8 and 24 patterns respectively.
Is it over? Not quite. The first thing you ought to do is re-read the definition of alexandrine. We have a silly one, 'an iambic hexameter with a cesura in the middle': if this definition were correct, and if we consider that 'iambic' simply means 'not having stresses on odd-positioned syllables', we would find out that the possible stress patterns are not 24 but drum rolls 13. The definition is not true, but it is fully possible that some poets adopted it anyhow. The Present Author would very much like to see how the matter stands in the original 'Alexandre', but has failed to find a copy so far.
However, if one looks up the actual definition (the one provided by this guide, of course) of 'alexandrine', he'll presently find that this verse is just a collage of two verses of six metrical syllables each. Never the ones to be swayed by the presence (or absence) of line breaks, we can now take into account the number of stress patterns of a verse of six metrical syllables, which is rather scant: 6.
Still not convinced? You might want to consider another myth of English literature, namely the Skeltonic verse. The so-called 'light of English poetry' did not actually invent any verse form: he merely used a mix of verses of four, five and six metrical syllables, usually with a purposefully cranky and stinted flow; the avid reader can find an example of this in 'The Tunnyng of Elynour Rummyng'. Now, if we sum up the verse patterns corresponding to the three metrical lengths employed in this (and many other) poems, we find:
How to Get Away with Defective Verses
Now, this takes more mathematics--in fact it takes so much mathematics I shan't even try to show where the numbers come from, but one can demonstrate that, if one has twelve possible stress patterns and a poem of fourteen lines, the average number of stress patterns he actually uses is 8.45; by writing at random there is also an almost 32% chance that he will use six, or less, patterns. What does this mean? Something absolutely simple: that if one writes a poem in iambic pentameters and purposefully uses all the eight stress patterns, he will sound more or less as if he wrote a poem, say, in endecasillabi and used the patterns at random. In other words he will get away with it! Even alexandrines can work: if one uses all the six patterns available (which is almost certain, having to write 28 of them), an ear trained to poems will assume that the sonnet simply belongs to the 'poorest' 32%.
If you consider, i.e., the success of the alexandrine in France, you'll notice that it is parallel to that of the sonnet: XVI century ballades are generally in octasyllables or decasyllable, whereas the moment of true glory of the alexandrine came with the Symbolism, which incidentally uses a cartload of other metres as well.
Of course this trick won't work for longer forms: a play or an elegy are far too extensive to keep disguising the scarcity of patterns; but do playwrights actually write blank verse? Jacobean playwrights like Webster are known to screw the form up to incredible levels, but the generation preceding them, namely the Elizabethian ones, are generally credited with sticking to it. This point of view is, however, merely wishful. The Shakespeare example above, in which the alleged bard of Avon stresses the first syllable ('creeps') was chosen because of its notoriety, not out of malice. If you pick at random among his verse, you will presently find that there is a metric irregularity every fourth line or so. If the Reader prefers Marlowe (the Present Author does), here is the beginning of Doctor Faustus' first monologue:
Settle thy studies, Faustus, and begin
To sound the depth of that thou wilt profess;
Having commenced, be a divine in show,
Yet level at the end of every art,
And live and die in Aristotle's works.
Sweet Analytics 'tis thou has ravished me:
Bene disserere est finis logicis.
Is, to dispute well, Logic's chiefest end?
The Meaning of It All
Twelve is not a remarkable number in poetry (and in the cabala) only: it is also the number of frequencies (excluding octaves) used in music. In layman terms: there are only twelve notes. But has it always been like that? No: until the second half of the 18th century, there were many more, e.g. a C sharp was not the same as a D flat. The way of writing classical music was different as well: it was controlled by a set of rules called tonal harmony (which survives, in a very simplified form, in modern rock and pop) which ensured that one never used too many of these notes at once. In order to do so, it divides the notes in sets called major and minor keys (or tonalities, hence the name); one can pass from a key to another only if they are close to each other (and therefore contain a large number of common notes), and with very strict rules in order to inure the ear of the listener to the change.
It is interesting that in a minor key one can use (following opportune rules) 10 of these notes, and introduce at least a couple more as the beginning of a change in key: now, since a theme (in layman terms, a sort of melody) is generally built over two "half themes" belonging to two adjacent keys, the theoretical choice of notes one could use in it is, chillingly enough, about 12. The actual number of different notes one normally uses is, however, something like 8. Do these numbers ring a bell? With the introduction of the 'tempered scale', the one which only has twelve notes, tonal harmony started declining. Its rules, which were very clear in the 17th become increasingly more blurred, and the most ferociously enforced ones turned to be those who ensured variety, rather than those which were meant to prevent chaos. The epilogue of the situation was the creation of dodecaphonic (twelve-tone) harmony, which imposes that every melody must contain all twelve notes (hence the name).
Where is the connection? Most likely, in the human brain: we owe to a branch of psychology called cognitive science the discovery of the phonological loop. It is extremely interesting because it is one of the very few psychological processes which yield reproducible numeric results. The phonological loop is a short term memory in which we can store, for example, numbers that somebody tells us; research shows that the amount of 'items' one can retain in this loop is 7 plus or minus 2. This demonstrates that there are universal constants in human memory, and it is at least reasonable to imagine that the binary stress patterns (or the frequencies) available for the immediate enjoyment of poetry (or of music) might be constrained by similar limitations. The last thing we can do, before this abstruse work is concluded, and its readers can decide whether it deserves contumely or plagiarism, is consider the experimental range of the result: if the average number of items kept in the phonological loop is 7 but the range is 5 to 9, assuming that patterns memory works the same way with an average of 12 would give us an 8 to 15 range; this works somehow: an 8 stress patterns range corresponds to something in between a six- and a seven-metrical syllable verse, and both are very common in archaic and popular poetry, albeit, in all honesty, they are lacking in the first place I looked for them, namely in nursery rhymes, which don't seem to have a metrical order whatsoever.Perhaps recognition of stress patterns is something we develop later in life: the Present Writer became fond of poetry when he was well over 18, in spite of constant exposure to it through all his childhood. An analysis of the most sophisticated pieces of the most sophisticated troubadours might help establish the higher limit (in Arnaut Daniel's 'L'Aur'Amara' there are 16), but again the 'skeleton' effect might be misleading. As soon as more certain results are available, this page shall be the first to know.
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