Categories

What are our objects?

Essays --> Paragraphs --> Sentences --> Words --> Syllables --> Letters

Now what are potential rules between various objects?

Object --> Relation --> Object

Essay --> Paragraph.Count
Paragraph --> Sentences.Count
Sentence --> Words.Count
Word --> Len(Word)

Syllables and letters are more complicated... Syllables aren't exactly units of pronunciation... I'm thinking more along the order of "internal repetition of structure"... spotting frequent prefixes ("an", "de") and suffixes ("ed", "ing").