‘Designing things like door handles for people with only one arm is a good idea not just because it helps those with only one arm, but also because all of us so

‘Designing things like door handles for people with only one arm is a good idea not just because it helps those with only one arm, but also because all of us sometimes have only one arm. If we’re carrying a hot cup of tea, for instance…’ …to (very liberally) paraphrase Rory Sutherland.