Some disabilities telegraph themselves pretty obviously: think of someone using a wheelchair, or a blind person walking around guided by a guide dog. Other disabilities don’t. Rosalie is deaf. When she visited her local Teavana and broke an item on the shelf, she tried desperately to point out to the salesperson that just talking at her wasn’t effective communication. The employee wouldn’t listen. When she tried to follow up with Teavana corporate later, no one would answer her.