One-size-fits-men

We're all different sizes, and there is no one-size-fits-all, but when it comes to the chosen size it turns out that that size mostly fits men better.

Caroline Criado Perez in her book Invisible Women shares how so much of the designed world fits men better than women — examples include piano keyboards that make playing more technically difficult and more prone to injury for smaller hands, stab vests that didn't take account of breasts, crash test dummies for car seats tested only with males, toilets that always lead to queues, phones that don't fit female hands or pockets, and voice recognition that picks out male voices more easily.

It's a stark reminder of how we need to do more to design with more of the world in mind rather than the default reference male.

Read more: The deadly truth about a world built for men – from stab vests to car crashes.

See also brilliance bias and the curb-cut effect.