One more point. Hoffman claims he is making a scientific argument, and it is based on scientific concepts like bacteria, sensing, and evolution. But if humans c

One more point. Hoffman claims he is making a scientific argument, and it is based on scientific concepts like bacteria, sensing, and evolution. But if humans can't know reality, then these concepts, developed by humans, are false, and so his whole argument collapses. That is, if his argument is true, then it is false. Actually, he is really making a philosophical argument, one based in the radical skepticism that has plagued many (but not all) Western philosophical schools since Descartes, but dressing it up in some quite poor science.