It seems to me we are in a desperate situation - we need to decarbonise energy, but so far have only made a tiny tiny scratch with intermittent, low-density ren

It seems to me we are in a desperate situation - we need to decarbonise energy, but so far have only made a tiny tiny scratch with intermittent, low-density renewables. So I don't get the sanguine attitude to whether we need fusion. It looks very much like we need something else, if we're ruling out fission.