To sample from the probability distribution you already need random numbers. If you get your random numbers from a cryptographic PRNG, then to notice the diffe

To sample from the probability distribution you already need random numbers. If you get your random numbers from a cryptographic PRNG, then to notice the difference between that and 'real' random numbers even in theory, means you need to break the cryptography. In practice, your gut feeling about how good some text is won't break modern cryptography.