Mr Rowley, a graduate of Kingston University said: “When using step stools and ladders around the house, it is usually for a very brief moment and with only one step.
“I wanted to create an object that facilitated this behaviour while maintaining a smaller footprint.” More here.
It sounds strange, but when you think about it as a tool it makes a lot of sense. It also looks great no matter where it is stored which makes it the perfect design idea. Good design has to offer a benefit as well as simply look good.