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What will be the best sales rank number in 2019 for the book Cosmological Koans?

Amazon uses a bestseller rank to give at least some public information about how products are selling. The details are a bit sketchy, but roughly speaking it corresponds, in books for example, to where a given book ranks in terms of total sales among all books (or among all books in a particular category).

Cosmological Koans is a new book released on May 21, 2019 in which the author of this question has a deep vested interest. It's a book of physics and cosmology, told in the form of Zen koans that take place in a cross-world journey in the early 17th century. Along with lots of perplexing physics, it's got Galileo, life-and-death conflict, Tibetan monks, a caged superintelligence, and more.

How will it sell? The book's bestseller rank can be found on its Amazon page.

What will be the highest rank (lowest number) point it reaches in 2019?

Resolution can be supplied by the author, who can obtain a full plot of the rank even if it is not available elsewhere.

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