Shuffletracking is why you pursue the human shuffle. I don't know what it is that is producing the effects I see over and over again with human shuffles, across dealers, casinos, etc.

Bryce Carlson admitted some nonrandom "clumping" effects are, among other things, "generally small, probably not exploitable, rarely (if ever) encountered in the real world - and such biases seem to favor the house as often as they favor the player. But they are there."

I don't believe Carlson's sims from 6 years ago adequately mimicked a real, human, casino shuffle. I believe that in order to see the effects I see, one needs to use real cards with real dealers.