> Did we finally learn how to extract more energy from a fusion rector than we supplied to operate it? No. The issue is that most people only report the gain o

> Did we finally learn how to extract more energy from a fusion rector than we supplied to operate it? No. The issue is that most people only report the gain over the plasma (i.e. how much energy was put into generating the plasma) rather than the full amount of energy put into the process (i.e. superconductors, magnets, generating the deuterium/tritium, maintaining the sun-like heat, etc). If you add this to the computation, you end up having to have a "fusion-gain" of around 50x to break even. The reason people report the plasma efficiency instead of the actual operating efficiency is to get funding and hype. Don't get me wrong, this result is still impressive, but it's still orders of magnitude off of the required efficiency.