How do you relate to other lighting specialists when you are aiming for sustainability?
I like working with them. For example, we have carried out numerous projects with a lighting manufacturer, some of which led to the development of lighting devices which were then put into production. The objective is efficiency, long-life, and restriction of consumption, and modern technologies help us in this respect. Previously a halogen lamp would last for 1,000 hours, and a sodium and mercury vapour one would last for about 10,000 hours; LEDs can now last for as long as 60,000 hours. If the service life changes, you can also vary the way in which you design the object, in relation to the way in which it lasts over a period of time.