You're basically applying the Sorites paradox to random numbers. Sure, asking whether or not any single number is random does not really make sense (although I

You're basically applying the Sorites paradox to random numbers. Sure, asking whether or not any single number is random does not really make sense (although I suppose if we have enough digits to look at then something similar to Benford's law might apply to their distribution). But the point being made was about humans as random number generators and the distribution of numbers they produce. It's like comparing individual molecules to statistical physics.