english: 40 years long, with an overlap. You can put that statement on all kinds of different technologies. The interesting thing -- by the way, the speed here, excuse me, higher-speed travel is the title of these innovation cycles. There is none here.
non_english: 40 jaar lang, met overlap. Dat geldt voor allerlei technologieën. Wat interessant is -- overigens, de snelheid hier, neem me niet kwalijk, hogesnelheidsvervoer is de titel van deze innovatiecycli.