Kurt Vonnegut Jr.'s "Cat's Cradle" introduces the concept of a 'karass', which is essentially a group of people connected in a way that defies rational explanation. According to the character Bokonon, if someone’s life seems intertwined with yours without clear reasons, it might indicate that they belong to your karass. This idea reflects the unpredictability and complexity of human relationships, suggesting a deeper, almost cosmic connection beyond mere coincidence.

The notion of a karass challenges conventional views of social interaction, presenting a worldview where connections among individuals are preordained or fated. This concept encourages readers to reflect on the meaningful yet inexplicable ties they share with others, emphasizing the significance of community and interdependence in their lives. "Cat's Cradle" thus becomes a commentary on the sometimes chaotic, yet significant nature of human existence.