I think the experiment’s conclusion that subjects sought to model the cards instead of to maximise wins is only valid if they had the probabilities, and/or could easily verify them, at the start; and (as many have noted) saw the deck reshuffled after each trial. (Without the probabilities, it sounds like their ‘mistake’ would be not noticing a majority color or not optimising when they did—I think I read the experiment as intended, but readers might find doing so easier if given these conditions.)
I think the experiment’s conclusion that subjects sought to model the cards instead of to maximise wins is only valid if they had the probabilities, and/or could easily verify them, at the start; and (as many have noted) saw the deck reshuffled after each trial. (Without the probabilities, it sounds like their ‘mistake’ would be not noticing a majority color or not optimising when they did—I think I read the experiment as intended, but readers might find doing so easier if given these conditions.)