Secondly, she employs a hands-on design process, working with models and material samples rather than a computer whenever possible. For the KLM armrests, Jongerius hand-carved foam models "so you can feel the radius. What is a radius if you type a number into a computer?" she said.
Thirdly, she tries to introduce imperfection into industrial processes. Her B-Set range of tableware, designed in 1997 for Makkum, involved deliberately setting the kiln temperature too high so the porcelain buckled slightly – a technique that she says has now been widely copied. "Perfection kills everything," she said.