What role does a superstitious belief in evil omens play in sir Patrick spens?

In "Sir Patrick Spens," the superstitious belief in evil omens underscores the tension between fate and human agency. The ominous signs, particularly the "weird" warnings about the sea voyage, foreshadow disaster and highlight the characters' vulnerability to forces beyond their control. This belief amplifies the tragedy of the narrative, as the crew's disregard for these omens ultimately leads to their demise, illustrating how superstition can shape actions and outcomes in the face of inevitable fate.