--- Kermit Pattison, in Fossil Men: The Quest for the Oldest Skeleton and the Origins of Humankind Hardcover (2020, p. 360), via Stephanie Hanes's review in the CS Monitor, December 2020.
In context
The Royal Society conference began to expose the battle lines around the oldest family skeleton. Those guided by genetics and primatology used living apes to make logical inferences about our common ancestors. ("I have no more direct access to the last common ancestor than anyone else in this room," McGrew explained to the audience. "So we have to model. We're forced to do so.") In contrast, those guided by fossils took a ground-up approach— bones revealed what really happened. Those two mind-sets placed faith in different lines of evidence, made different assumptions, and inevitably reached different conclusions. In the first approach, the relationships between humans and apes were irrefutable, but the form of their common ancestors remained conjectural. In the fossil-based method, bones provided rock-hard evidence of past forms, but their places in the family and relationships to humans could only be surmised. Both sides fought to make their work relevant to human origins—and Ardi [a 4.4-million-year-old female skeleton, short for Ardipithecus ramidus] became the flashpoint.
In short, it was a classic clash of scientific worldviews. Science is not just a quest for new facts; it also is a contest between rival models for interpreting nature. In his 1962 milestone The Structure of Scientific Revolutions, historian Thomas Kuhn introduced the idea of the scientific paradigm—the set of theories and methods that …
One of Ardi 's main lessons is that the simplistic narratives contrived to fill gaps in the fossil record often turn out to be wrong. Consensus can be a poor predictor of who turns out to be right in science. The most enduring work is that which describes things never seen before—human anatomy, fossils of extinct animals, ape behaviors, genetic code, ancient ecosystems, and more—without distorting that novelty to conform to the expectations of the era. But we humans hunger for more than just pure description—we search for meaning and emotionally satisfying endings, and that's when we run astray, because our reach for narrative often exceeds our grasp of facts. In the struggle to comprehend the unfamiliar, we invoke familiar analogies, but nature usually turns out to be more complex than what we imagine in our little brains. The only way to know for sure is to discover.
