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Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Nonsense, balderdash.

wordy and generally unintelligible jargon (nonsense)

When you are speaking absolutely non-sense. Every word you are using is not English or it is not making any sense.

language that is meaningless or is made unintelligible by excessive use of abstruse technical terms; nonsense.