It was a non-participatory observational study, which means that it was a study that observed and recorded the gamblers in the casino without their knowledge. The break-streak-pattern mentioned in the article is actually what gamblers often call a "broken" or "connected" path.
The final conclusion of this study is also consistent with the fact that most gamblers will continue to play on a path until the path is broken.
But the continuous path itself is not a reliable basis for people to predict the results. On the contrary, the interruption of the path indicates the beginning of the balance of the result sequence.
For example, if 5 consecutive "big"s are drawn, and the 6th "small" is drawn, it will strengthen the gambler's belief that "small" will be drawn again in the short term.