This is all you really need to read from Stacey:<p>"Based on our present understanding, D-T tokamak fusion reactors project a cost-of-electricity that is about 50% larger than the projected cost-of-electricity from advanced light-water reactors in the middle of the next century."<p>We all know what happened to the projected cost of fission reactors -- the projections turned out to be hopelessly optimistic, because of complexity and loss of experience. Fusion would face these problems in even worse form (indeed, ITER's cost ballooned 4x or more past the initial projections.)<p>The experience with fission has enabled us to calibrate the optimism bias in these projections, with damning results.<p>Simply being competitive with fission is no longer good enough for fusion to succeed. It has to be significantly better than fission.