Gen IV you're right. Gen III (and "III+") reactors already bring significant safety changes ("passive nuclear safety", though that is a spectrum) and we've had

Gen IV you're right. Gen III (and "III+") reactors already bring significant safety changes ("passive nuclear safety", though that is a spectrum) and we've had a few of those running for a while now, the longest for 20+ years. https://en.wikipedia.org/wiki/Generation_III_reactor#Generation_III_reactors_currently_operational_or_under_construction https://en.wikipedia.org/wiki/Generation_III_reactor#Generat...