In Irish mythology, Cassandra is often associated with the power of foresight. This ability allows her to predict events, often involving tragic outcomes, yet her warnings go unheeded. The concept of foresight ties into broader themes of fate and destiny, illustrating the complexities of knowing the future but being unable to change it. Cassandra's story serves as a cautionary tale, emphasizing the burden of knowledge and the consequences of ignoring prophetic insights in human relationships and decision-making.