A delusion is a fixed belief that is not amenable to change in light of conflicting evidence. As a pathology (delusional disorder), it is distinct from a belief based on false or incomplete information, confabulation, dogma, illusion, hallucination, or some other misleading effects of perception, as individuals with those beliefs are able to change or readjust their beliefs upon reviewing the evidence. However:
A delusion is a fixed belief that someone holds firmly despite evidence that contradicts it, and unlike ordinary false beliefs, a person with a delusion cannot change their mind even when presented with conflicting facts. Delusions matter because they represent a distinct type of psychological condition that differs from simple misinformation or perceptual mistakes, and recognizing this distinction is important for understanding and treating mental health disorders.
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via Wikipedia infobox
A delusion is a fixed belief that is not amenable to change in light of conflicting evidence. As a pathology (delusional disorder), it is distinct from a belief based on false or incomplete information, confabulation, dogma, illusion, hallucination, or some other misleading effects of perception, as individuals with those beliefs are able to change or readjust their beliefs upon reviewing the evidence. However:
"The distinction between a delusion and a strongly held idea is sometimes difficult to make and depends in part on the degree of conviction with which the belief is held despite clear or reasonable contradictory evidence regarding its veracity."
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).