The other day, I was serving and elderly lady and her blind daughter. I didn't really pay much notice to the blind girl, but I was handing her the goods, waiting for her to grab it and put it in the trolly. After the elderly woman paid for her stuff, she grabbed my hand as the daughter walked away, and with a tear in her eye, said "Thank you for not treating my daughter like an idiot. IMMD and hers too :)