A mix of the words forwards and backwards
Something that is forwards, but not really.

It confuses you, but you understand it. (but not really)
An amazing example of fackwards is a youtube video by the name (Megalovania but its backwards but also forwards) I ask that you search it up after reading this
Thank you very much (but not really)

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.