The sonorification bit has me interested. Perhaps a human trader could outperform the rats, or at least themselves, if they went just by sound data without trying to think too hard? I can see he's going to try training humans to trade this way, the results of this will be pretty interesting.

It may very well turn out that the difference between trading by looking at numbers and trading by sound and intuition is like looking at someone throw a ball and predicting where it will land versus being told the ball's mass and initial vector - in the former case you can very quickly predict with a good accuracy where it will land, while in the latter you need a good amount of time and a few sheets of paper and you achieve accuracy that's not that much better.

And yes, I realise that once you stretch the analogy too far it doesn't work, the ball will follow a completely deterministic trajectory, while the stocks move in a rather random fashion and the principles (if you can call them that) that govern their movement are not known to nearly the same precision as the principles of motion of a rigid body on Earth in normal atmospheric conditions.

But I'd say that if you look past that, the analogy is informative and serves to roughly illustrate the point.