typo

There's a placard posted outside the ladies' room in my office building. The sign also has braille, but I noticed that some of the raised dots are scratched off. Does that constitute a typo? Will a visually impaired woman looking for a restroom check the sign and be misled? What if the typo actually spells out: "No man's land. Enter at your own peril." or "Crocodile breeding ground. Do not enter."

Also, is this post horribly insensitive?