I recently visited a longtime donor of HelpAge Canada in Eastern Canada, who’s now in a wheelchair and living in a retirement home after a car accident. She shared her struggles with navigating her city’s inaccessible buildings and sidewalks – she can’t do so many of the things she loves anymore, like going to the movies or visiting family, because she can’t even get to the door. This highlighted to me how so much of how our world’s design ignores older people’s needs, isolating them…