1. Academic treatments of the history of bicycle innovation focus on the period between von Drais's invention and the "safety" bicycle of the late 1800s. Cf. WIEBE E. BIJKER, OF BICYCLES, BAKELITES, AND BULBS 19-100 (1997) (emphasizing the role that changing gender relationships had on the development of the modern bicycle);See generally Harriet Zuckerman & Joshua Lederberg, Postmature Scientific Discovery?,1986