If nuclear fusion can be >= lucrative than nuclear fission is an open scientific question. Indeed all solar panels on earth are just capturing byproducts of a

If nuclear fusion can be >= lucrative than nuclear fission is an open scientific question. Indeed all solar panels on earth are just capturing byproducts of a fusion reactor that is the sun. But a fusion reactor at the scale of ITER is not proved to be lucrative even in an ideal world. I would have hoped that modern physics would allow to predict with great accuracy how energy efficient would an ITER-like be in an ideal world where all enginering issues would be solved. Maybe the proof exist and I'm just anaware of it.