This would also be true for the example given of what NOT to do: "the free wheelchair". Using readily available components allows these products to go on being

This would also be true for the example given of what NOT to do: "the free wheelchair". Using readily available components allows these products to go on being used well beyond their initial design life. What could be more appropriate or desirable than a working repairable wheelchair? I can't remember clearly, but when I first started working at Dyson I think we got a talk from the chap that worked on this project.