Well, if the equation says 99% of the time, if random, there wouldn't be a sequence that long, I'll bet on it.
Sayings, sub sayings, sentences, words, or individual characters.
And since the probability of a Mark (or anything in general) isn't 50/50, I just don't see your point about preferring a coin toss vs. dice. A fair dice/coin produces statistically random numbers, and if you roll/flip them a lot, it approaches maximum algorithmic randomness/maximum entropy/maximum complexity/largest compressed file size.
Richard Van Vliet