16. Today our supposedly revolutionary advancements in artificial intelligence are indeed cause for both concern and optimism . Optimism because intelligence is the means by which we solve problems. Concern because we fear of the most popular and fashionable strain of A.I. - machine learning - will degrade our science and debase our ethics by incorporating into our technology a fundamentally flawed conception of language and knowledge. (A)supposedly revolutionary advancements(B)both concern and optimism(C)is the means by which(D)we fear of(E)by incorporating into