Amazon's selling all seven Harry Potter books as a boxed set, and seeing them all lined up made me wonder if it was possible to spot a clear growth trend -- in spine widths.
Meaningless, I know. And I haven't even read the books.
(The movies don't count, do they?)
KTW, who has read -- and also owns -- the first six books, was kind enough to provide the measurements.
The trend isn't as obvious as I had hoped.
One "get out of blog-meme free card" will be conferred upon the brilliant talent who can project (or take a wild swinging guess at) the actual spine width of the soon to be released Book No. 7.
Update: It does appear that the diagram creates a snake-like pattern -- a silent homage by Rowling to Potter's Parseltongue powers? hmm.