[mdprock]

some material in iter are not relevant for future reactors, true. But some yes and will face a fluence that is n order of magnitudes higher than what has been tested in jet, the most powerful tokamak so far. so it's a "half-way" demonstration. in any case materials are not everything, iter will test remote handling, breeding, long pulses, etc etc. we can argue that tokamak are not the right path but at the moment is the most advanced so it is worth pursuing it.