When someone says that we need to develop nuclear power instead of rather than in addition to other kinds of alternative energy technology, it's a strong sign that person is ill-informed, gratuitously querulous, and indifferent to the environment, and writes on the subject principally for the emotional gratification he gets from believing himself to be skewering the pieties of left-leaning greens.
Either that, or he is simply negligent about language to the point of being unintelligible.
The proper way to reward this behavior is to subtract a few points from your estimate of Tabarrok's credibility. I suggest that all Marginal Revolution readers do so.