To imagine that a time will come whose composition is, in its specifics, unimagineable to us is to imagine the familiar and the fruit of experience, and so I stick with "irony".
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"To imagine the unimagineable" is the cruix.
My example...
"To conceptualize 'nothing', " is the analogy.
Semantically both statements are meaningless.
Yet both statements have a function in describing
a state that can't be described, as a condition of contrast for clearer understanding.
Right?