Back in the 1960s, designers of the lunar lander were having terrible trouble getting the thing to pencil out within the constraints they had. The astronauts needed a clear field of view, but a sitting astronaut requires a large swath of glass in order to gain peripheral vision.
So they took out the seats. Not only did that solve the sight problem, it also solved the weight problem and the problem of mobility within the lander.
That’s a very interesting user-experience story.