“Why would a perfect designer,” she asked, “use a wrist bone to do the job of a finger? Why not just grow a real thumb? Why these crude, spare parts?”
She tapped the screen. “Because evolution cannot go to the hardware store. It cannot order a new thumb from scratch. It is a tinkerer, not an engineer. A paleontologist working in the dark, using the bones it has lying around—the ribs of a reptile, the jaw of a shrew, the wrist of a bear—to build a new tool for a new job.”
Dr. Elara Vance pressed her thumb against the cold glass of the display case. Beneath it, mounted on a pin, was the wrist bone of a panda. It was a small, unassuming sesamoid bone, but to her, it was a miracle—and a lie.