One of my favorite quotation devices
Sic according to the book of Webster states: Thus; so. Used to indicate that a quoted passage, especially one containing an error or unconventional spelling, has been retained in its original form or written intentionally.
it's used so that
you as a writer will not look stupid towards the audience.
"Hey, don't shoot the messenger, the guy wrote it, I'm just reproducing it - and, yes, I know it's WRONG myself"
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