Of all the fusion approaches muon-catalyzed has always seemed to be the most promising one for me, mostly because needed improvements are so clear: make muons c

Of all the fusion approaches muon-catalyzed has always seemed to be the most promising one for me, mostly because needed improvements are so clear: make muons cheaper to produce and/or make them catalyze more fusions. All the other ones seem much harder to achieve. Well, maybe that weird approach Helion is trying will pay off, who knows.