He's technically right about that. We assume that random means a uniform but unpredictable distribution of all outcomes, but that's often a clear signature of nonrandomness. Randomness involves bunching of values/outcomes. Read this: http://www.empiricalzeal.com/2012/12/21/what-does-randomness-look-like/ I agree that six plays isn't enough to make a firm conclusion, which is why I joked about playing a thousand times.