They were exploring following what was interesting to them. They went from designing splints for wounded soldiers coming out of World War II and the Korean War, I think, and from this experiment they moved on to chairs.
Exploraban según lo que resultaba interesante para ellos, y se pusieron a diseñar férulas para soldados heridos de la Segunda Guerra Mundial y de la Guerra de Corea, creo, y de estos experiementos pasaron a las sillas