As A Terrible Speller,

I know I should not make fun of other peoples spelling mistakes,

 but I liked this one as redditor RenoGuy76 saw a crew installing a new sign on a building, he had to take a picture, then the moral dilemma, should he go and tell them they were misspelling a word, or just leave it as it was?

well they did come back and rectify their mistake, or was it? have a look here at the Arcada web site, the word is used 9 times but which spelling is correct? now I am really confused.