The title of this post is obviously an interesting choice of words. However, those words were not mine, but that of V.S. Ramachandran in his book, The Tell-Tale Brain. He uses those words to describe why the brain does certain things, even though it is irrational.
In Ramas book, he uses it to show that the brain chooses absurdities to negate discrepancies of any kind. In that section of his book, he explains capgras syndrome, where a relative or loved one is classed to be an impostor. Rama explains that the patients brain chooses the impostor route, as the brain doesn’t feel the emotion due to a break that links certain parts in the brain. It is absurd for it to be an impostor, and the brain knows that facially and vocally that it is their mother, but since the emotional centre has lost connection, he doesn’t feel the same way towards them. As a result, the brain chooses the disposition, that they are a fraud.