Thorium in a LFTR breeds almost as well in a stable thermal spectrum reactor as U238 does in a twitchy fast spectrum reactor. And a LFTR doesn't have nearly th

Thorium in a LFTR breeds almost as well in a stable thermal spectrum reactor as U238 does in a twitchy fast spectrum reactor. And a LFTR doesn't have nearly the neutron loss mechanisms that solid fuel reactors typically do.