Please permit me to be wildly off-topic but for a moment: A regard it as obvious by inspection that any truly random sequence of numbers will contain arbitrari

Please permit me to be wildly off-topic but for a moment: A regard it as obvious by inspection that any truly random sequence of numbers will contain arbitrarily many sequences of any arbitrary sequence of numbers. It is for that reason that I regard one time pads that consist of truly random numbers as insufficiently strong cryptography. That is, while exceedingly unlikely, the cleartext "attack at dawn" could well encrypt to the ciphertext "attack at dawn".