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Poster: not another guy
Subject: RE: Tell me a random fact about the world, I want to learn something new.
Body:

If you put a rubber band around a book (just to keep it shut) and then throw it up in the air trying to spin it about any of its axes you can spin it easily about its longest axis and its shortest axis but it is impossible to spin it about its middle axis.

For the geometrically challenged - (for most books) the longest axis is parallel to the book's binding but midway between the binding and the outside edge of the pages, the middle axis is parallel to the top and bottom of the book and half-way in between, and the shortest axis goes right through the center of each page of the book (think of sticking a pin through the middle of the book as it lies flat on a table.

Try it.
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