Somebody notices that the new market algorithm has started mainly deferring to Merrin, because the algorithm noticed that her most recent action is usually the best predictor of what will later be judged as a correct move.  (Not surprising when Merrin's action-output is the final summary of that much advice!)

There's a thing you do, in a case like this, to allow a trading algorithm to treat its own past final prices as data-about-history without relying on it as a followable indicator in a way that doublecounts evidence or creates circularity; but the whole system is hacked-together, and fixing that will take a few minutes once they notice.

Merrin will thus be warned at some point that the trading algorithm has started relying too much on her own judgment as a followable indicator, because she's right too often, and she needs to trust market prices less as validation of her own judgment; it's not actually independent and won't be for another few minutes.

Somebody notices that the computer-based portion of the new market system has started mainly deferring to Merrin, because the algorithm noticed that her most recent action is usually the best predictor of what will later be judged as a correct move.  (Not surprising when Merrin's action-output is the final summary of that much advice!)

There's a thing you do, in a case like this, to allow a trading algorithm to treat its own past final prices as data-about-history without relying on it as a followable indicator in a way that doublecounts evidence or creates circularity; but the whole system is hacked-together, and fixing that will take a few minutes once they notice.

Merrin will thus be warned at some point that the trading algorithms started relying too much on her own judgment as a followable indicator, because she's right too often, and she needs to trust market prices less as validation of her own judgment; it's not actually independent and won't be for another few minutes.

Somebody notices that the computer-based portion of the new market system has started mainly deferring to Merrin, because the algorithm noticed that her most recent action is usually the best predictor of what will later be judged as a correct move.  (Not surprising when Merrin's action-output is the final summary of that much advice!)

There's a thing you do, in a case like this, to allow a trading algorithm to treat its own past final prices as data-about-history without relying on it as a followable indicator in a way that doublecounts evidence or creates circularity; but the whole system is hacked-together, and fixing that will take a few minutes once they notice.

Merrin will thus be warned at some point that the trading algorithms started relying too much on her own judgment as a followable indicator, because she's right too often, and she needs to trust market prices less as validation of her own judgment; they're not actually independent and won't be for another few minutes.