Those objecting to MNT often cite a "consensus" against it. Despite authoring scary sf stories such as Prey, a nanotech/AI horror tale, Michael Crichton understands the core values of science better than some prominent scientists, as he showed in this lecture at Caltech about the dangers of "consensus science":"I regard consensus science as an extremely pernicious development that ought to be stopped cold in its tracks. Historically, the claim of consensus has been the first refuge of scoundrels; it is a way to avoid debate by claiming that the matter is already settled. Whenever you hear the consensus of scientists agrees on something or other, reach for your wallet, because you're being had. Let's be clear: the work of science has nothing whatever to do with consensus. Consensus is the business of politics…In addition, let me remind you that the track record of the consensus is nothing to be proud of." Also worth reading is his essay on molecular nanotechnology.