# Finding book ISBN numbers in Pi

It would be more interesting to find entire books in PI. As any series of characters can be converted to numerical form, it wouldnâ€™t be impossible for some stretch in PI to happen to be that number.

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Apophenia for geeks

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How about getting the MD5 hash of a book and finding that in Pi?

Then depending on the data interpretation convention used, stretches of pi are already copyright infringements.

I think pi came before all those books.

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Does that mean all copyright is bunk because every book/recording ever already existed in nature?

This isnâ€™t a rip of a DVD, itâ€™s just a file containing a segment of Pi.

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I am instantly reminded of the ending of â€śContactâ€ť (the book).

(No spoiler here, go read the book!)

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My friend used to joke he wanted to take a text, interpret it as a number and add a decimal place to the left, then encode the entire text by making a notch a fraction of the way down a stick where the fraction was the number with the leading decimal.

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Sure, thatâ€™s true, but to prove it in a court of law you might have to calculate pi to a rather large number of digits.

Your friend is probably great fun at parties.

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Man, Licentiate seminar on environmental engineering and biotechnology is always the first.

If you like this postâ€¦

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Innocent until proven guilty.

Theyâ€™d have to calculate all the digits to prove it wasnâ€™t there.

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Itâ€™s interesting to ponder that somewhere within the value of PI is the numerological description of an entire alternate universe, described particle-by-particle, where the laws of physics are such that the value of PI is exactly 3, as is taught in the Bible.

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I wonder what the longest sequence of integers found at least twice in pi is, so far.

Clearly the universe was made on purpose, by the U.S. ISBN Agency.

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Also, at some stage (or at an infinite number of stages), the entire sequence of pi up to that point will be repeated.

Is this actually true? It feels true but I suspect thereâ€™s some weird set theory catch.

Edit: Are the digits of Pi considered truly â€śrandom?â€ť Theyâ€™re certainly not arbitrary.

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Man, that was a good episode of Mathnetâ€¦

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