Is there a secret message encoded in the first decimals of $\pi$?
Source: Vi Hart
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The first four digits after the decimal point in $\pi$ are 1415. If we convert this using an alphabet cipher ($A=1, B=2, \ldots, Z=26$) we get $$ 14|15 \rightarrow NO$$ So we have
Q: "Is there a secret message encoded in the first decimals of $\pi$?"
If we take $\pi$ up to eight digits after the decimal point i.e, $3.14159265$ and use an alphabet cipher ($A=1, B=2, \ldots, Z=26$) we can construct the following $$3.14|15|9|26|5 \rightarrow C.NOIZE $$ and C-Noize is apparently a musical artist with some music on youtube.
So maybe the universe is telling us its favourite type of music?
Here's my guess
Take the first 100 digits of pi: 1415926535 8979323846 2643383279 5028841971 6939937510 5820974944 5923078164 0628620899 8628034825 3421170679
STEP 1: Based on whether a digit is odd and even, convert it to AB format. Result: ABAAA BBAAA BAAAA BABBB BBBAA BABAA ABBBB BAAAA BAAAA AAAAB ABBBA ABABB AABAB ABABB BBBBB BBBAA BBBBB ABBBA ABBAA ABAAA
STEP 2: This obviously relates to Francis Bacon's biliteral cipher (see wikipedia), a long-time favorite way of hiding messages; however, this is apparantly an unpublished version of the cipher, since some combinations are not in Bacon's public alphabet. The letter pattern looks like this, however (i.e. which letters are repeated and where and which letters are not repeated at all):
12345 673(repeats 3rd letter, so the 3rd letter in the message is repeated)38 9(10)(11)(10)(12) 5(12)9(13)1 (the parentheses are there to avoid confusion when there are two digits in the number)
STEP 3: It is important to know that anagrams were a primary form of cryptography in Bacon's day (see wikipedia). Thus, when we produce the following gibbberish through simple monoalphabetic substitution (see wikipedia)...:
STEP 4: We can guess that it is in fact an anagram, and not gibberish. Rearranging the letters and using an "s" as a stop(period), we get.....
"I know the earth is flat."
Notes: https://en.wikipedia.org/wiki/Bacon%27s_cipher https://en.wikipedia.org/wiki/Substitution_cipher
Does this count?:
Pi music (link only sorry due to being a tune)
I'll give the short answer:
3.14 = 3×14 = 42
DNA revealed in his prophetic work HHGG that this is the answer to life, the universe, and everything.