From the article: "Now that mathematicians know Hedetniemi’s conjecture is false, the natural next question is just how false it is..." And from Stanislaw Lem

From the article: "Now that mathematicians know Hedetniemi’s conjecture is false, the natural next question is just how false it is..." And from Stanislaw Lem works (Cyberiad): "Everyone knows that dragons don’t exist. But while this simplistic formulation may satisfy the layman, it does not suffice for the scientific mind." Time to read some Lem again?.. ;)