Read the passage carefully and answer the questions that follow.
For our ancestors in the early 1800s, the discovery of bones and footprints was thrilling, bewildering news. This was not just another scientific discovery, like the sighting of a new moon around a distant planet. This was proof of life where no one had ever imagined it. Poets, scientists, and ordinary men and women looked at the dinosaur discoveries and shuddered and marveled. Tennyson (using an archaic word for “tore”) imagined a bygone world that featured “Dragons of the prime, / That tare each other in their slime.” Perhaps Tennyson and his peers would have been less astonished if they had anticipated a world that teemed with huge, violent beasts. But the nineteenth century’s aliens turned up out of the blue, as we have seen, and the public was blindsided in a way that people in today’s world—who have known about the search for ET for decades—could never be.
One of the great hazards in trying to picture the past is forgetting that our forebears didn’t know how their story ended. We read about the Great Depression or the rise of Nazism knowing how it all played out. It’s hard to bear in mind that no one in the 1930s had that privilege. But we flatten out history’s drama—we miss out on people’s fears and hopes and illusions and expectations—when we bring our present-day knowledge with us on our ventures into past ages. In the case of the dinosaur discoveries, it wasn’t simply that no one knew how the story ended. More important, no one even knew what to make of how the story began. That puts the dinosaur story into unusual company. Every once in a great while, people going about their ordinary lives have looked up and seen something they never imagined; A ship with towering masts and billowing sails materialized on the horizon, for instance, in waters that had never known a vessel bigger than a canoe for example. Of all such first encounters, none ever topped the moment when humans first stumbled on bones, footprints, and other evidence that dinosaurs had once roamed the earth.
The dinosaur story took on its modern shape around 1800, but it almost began far earlier, back in 1677. In that year, workmen digging in a quarry about twenty miles from Oxford University found a massive bone. They brought it to Robert Plot, a much-admired naturalist. Plot ventured a guess. “It must have been the Bone of some Elephant,” brought to Britain more than a thousand years before when the Romans had invaded. Plot rushed to compare his mystery bone and other giant bones in the museum’s collection with the elephant’s bones. Nothing matched! So horses were out, and oxen were out, and elephants were out, too. What was left?
Plot spelled out the only remaining possibility. “Notwithstanding their extravagant Magnitude, they must have been the Bones of Men or Women.” By way of support for this eye-catching claim, Plot went on to provide a pages-long list of human giants throughout history. Some had been described by Greek and Roman authors in antiquity, and some were more recent. From our vantage point, this seems silly. But Plot was not a silly man. He was open-minded and methodical, and he had gathered all the evidence he could find. But he was, like all of us, a creature of his own era. Which meant, in his case, that he could not imagine other eras and other creatures and a world before humans. The bone would eventually be properly identified, but not until 1824. It would take that long to come up with an explanation that would have struck Plot and his successors as far more outlandish than a world replete with human giants.