Argggh, the dreaded typo!!!
As a writer it's our worst fear, right?
We finally find the courage and confidence to show our work to someone, and there it is - the dreaded typo, missed word, doubled-up word, or sentence we haven't edited properly after a re-write.
And it's SO easy to do, especially by the third, fourth, or tenth, edit of our book.
I've done it believe me. Everyone has.