Again, from the Introduction....
The children’s picturebook is a format in the way the haiku poem is a format with its requirements of 5-7-5 syllables-per-line.
This may be a good commercial decision. But note that it’s made for commercial purposes. (It is the illustrations, evidenced first on book covers, that most clearly distinguish one book from the other in the context of the bookstore.)
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[This idea will be explored in Part 3, the final excerpt from the Introduction to Boxed Set.]