Final answer:
People fear the unknown because it represents uncertainty and unpredictability, challenges existing beliefs, and disrupts a sense of control.
Step-by-step explanation:
People fear the unknown because it represents uncertainty and unpredictability. When confronted with something unfamiliar, humans often feel anxious or afraid because they lack knowledge or understanding about it. In the story 'They're Made Out of Meat,' the characters cannot comprehend the concept of humans and their ways of thinking and speaking, which leads to fear and confusion.
Fear of the unknown is a natural human response that has evolutionary roots. In primitive times, encountering something unknown could potentially pose a threat to survival. As a result, humans developed a natural inclination to fear and avoid unfamiliar things as a means of self-preservation.
Additionally, people may fear the unknown because it challenges their existing beliefs and disrupts their sense of control. When faced with unfamiliar situations or ideas, individuals may feel insecure or apprehensive because they are unable to rely on their previous knowledge or experiences.