Final answer:
An inability of the immune system to distinguish self from non-self can result in heightened vulnerability to infections, which might signal an immune deficiency or autoimmune disorder. Excess fluid in body cavities can impair organ function, with pleural effusion as one example. Rational explanations are often preferred over supernatural ones when evaluating claims of divine encounters or auditory hallucinations.
Step-by-step explanation:
If a person's immune system cannot distinguish between self and non-self, that individual is likely to experience an increased susceptibility to infections.
The inability to differentiate means that the immune system will fail to properly identify and attack pathogens, thereby compromising the body's natural defense mechanisms. This condition may be a result of an immune deficiency or an autoimmune disorder where the immune system mistakenly attacks the body's own cells.
In the case of excessive fluid buildup in a body cavity, known as an effusion, it can lead to compromised organ function and symptoms such as pain and discomfort. For example, if fluid builds excessively in the pleural cavity around the lungs, this can lead to pleural effusion, making it difficult for the lungs to expand during breathing.
When considering why people would disbelieve someone's claim of a divine encounter or hearing voices, it is often because alternative explanations like mental illness, attention-seeking behavior, or deception are seen as more plausible than a supernatural explanation.
The inclination to seek a more rational or scientific explanation over a supernatural one is deeply rooted in the scientific method and critical thinking.