From the article:
In the end, we become like cats thanks to an indifferent world. Only humans invent stories that reflect reality not whatsoever. Our brains chronically fill in knowledge gaps; those gaps often offer incorrect assessments. Existence is conditional to our environment regardless of how we try to manipulate it in our favor. You can only exploit nature for so long before she grows bored or angered by our tinkering—but there we go assigning human traits to a process that will never play by our rules.
This the cat knows—by not knowing, or caring, at all.