Using the logic of that piece, since all science boils down to physics (or applied math), there's no need to hire anyone other than physicists (or applied mathematicians) for any science research.
(Or to quote Big Bang Theory: "I'm a physicist. I have a working knowledge of the entire universe and everything it contains")
(Or to quote Big Bang Theory: "I'm a physicist. I have a working knowledge of the entire universe and everything it contains")