Which excerpt from "On Becoming an Inventor" by Dean Kamen expresses a fact rather than an opinion? Kamen believes it may change the way people move around in crowded cities . . . I took the pictures, though somewhat reluctantly. I didn't like blood. At college, I was struck by how smart the teachers were—in electronics, in physics, and in mathematics. I didn't officially graduate from Worcester Polytechnic Institute until years later when I was awarded their honorary Ph. D.