Earlier this year, a 33-year-old actress disguised herself as Doris, a 90-year-old woman, and went shopping. She said she had never felt so alone. Doris was ignored by passers-by and felt invisible on the streets, in stores and in cafés. Fellow shoppers impatiently rolled their eyes at her when she struggled with her wallet and, when she was acknowledged, people spoke to her condescendingly as if she were a child. She found the experience lonely, humiliating, sad and frightening and couldn’t wait to remove her make-up and return to her 33-year-old self again.