“And these days,” he says, picking up on her logic, “most planes are held together with little more than glue. There are few welds. There’s not a pop-rivet or a nut and bolt in sight, and yet we trust them. But why? Neither you nor I have read the scientific reviews, we haven’t studied the methodology or even seen the test results. And yet we inherently trust the science behind an airplane. Why? Because we trust progress. We trust the rigor of scientific expertise constantly refining and correcting itself.
