You're referring to the Transatomic 2-student company's claims that their epithermal-neutron molten salt reactor could burn nuclear waste as fuel without additi

You're referring to the Transatomic 2-student company's claims that their epithermal-neutron molten salt reactor could burn nuclear waste as fuel without additional fissile feed stock. Professor Kord Smith and others pointed out their error. However, that their whimsical concept didn't live up to its hype is no reason to claim that the closed nuclear fuel cycle doesn't exist. Breeding more fuel than you consume in an advanced reactor was proven in the Experimental Breeder Reactor-1 near Arco Idaho in the early 1950s. The physical concept of breeding and closing the cycle is well-proven and 100% proven possible. No one debates this. People do debate how much it costs vs. the status quo of just mining uranium. Uranium is cheaper than recycling spent fuel, so we mine uranium. It's that simple. If we decided uranium was running low and drove prices up, reprocessing waste would become more economical and more people would do it.