You're both giving me too much credit. I was merely making the less sophisticated point that it's not 'easy' to find an arbitrary-length sequence in pi because

You're both giving me too much credit. I was merely making the less sophisticated point that it's not 'easy' to find an arbitrary-length sequence in pi because that might take longer than the lifespan of the universe when the needle gets long enough. Your response was much more interesting, though, thanks :)