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This dissertation shows that the central conceptual feature and explanatory motivation of theories of evolutionary directionality between 1890 and 1926 was as follows: morphological variation in the developing organism limits the possible outcomes of evolution in definite directions. Put broadly, these theories maintained a conceptual connection between development and evolution as inextricably associated phenomena. This project develops three case studies. The first addresses the Swiss-German zoologist Theodor Eimer's book Organic Evolution (1890), which sought to undermine the work of noted evolutionist August Weismann. Second, the American paleontologist Edward Drinker Cope's Primary Factors (1896) developed a sophisticated system of inheritance that included the material of heredity and the energy needed to induce and modify ontogenetic phenomena. Third, the Russian biogeographer Leo Berg's Nomogenesis (1926) argued that the biological world is deeply structured in a way that prevents changes to morphology taking place in more than one or a few directions. These authors based their ideas on extensive empirical evidence of long-term evolutionary trajectories. They also sought to synthesize knowledge from a wide range of studies and proposed causes of evolution and development within a unified causal framework based on laws of evolution. While being mindful of the variation between these three theories, this project advances "Definitely Directed Evolution" as a term to designate these shared features. The conceptual coherence and reception of these theories shows that Definitely Directed Evolution from 1890 to 1926 is an important piece in reconstructing the wider history of theories of evolutionary directionality.
ContributorsUlett, Mark Andrew (Author) / Laubichler, Manfred D (Thesis advisor) / Hall, Brian K (Committee member) / Lynch, John (Committee member) / Maienschein, Jane (Committee member) / Smocovitis, Vassiliki B (Committee member) / Arizona State University (Publisher)
Created2014
Description
In my Honors Thesis, I endeavor to complicate and to respond to conventional debates over historical periodization and the problem of what it means to be "modern." I understand the modern as a conceptual product of discourses surrounding religion, science, and industry. Specifically, the modern era has been defined as one in which the forms of rationalization associated with quantitative and experimental scientific methods and large-scale, technologically sophisticated industrial production have surpassed the "irrational" superstitions associated with religion. Critical responses to this definition have largely had the goal of supplanting it with another way of conceiving of the historical discontinuity between the "modern" and the "non-modern." In three essays, I aim to complicate the terms (religion, science, and industry) in which these debates have been conducted and to relate them to one another both historically and conceptually. As opposed to the goal of re-defining the modern, my goal in these essays is to complicate the existing definitions and to reveal and challenge the ideological motives of historical periodization. I illuminate the connections of the modern conception of "religion" to a colonial system of power, between scientific development and changes in economic and religious thinking, and between contemporary technological and industrial projects to an "enchanted" view of the world. In tracing these connections, I am indebted to conventional discourses of modernization, Max Weber's theory of "disenchantment," and recent scholarship on the use of materialist methods in the study of history. In these essays, I move beyond the critical project of "re-imagining" the modern, and illuminate some of the ideological commitments of that project that I consider untenable. In addition to a more sophisticated historical understanding of the meaning of religion, science, and industry, what I aim to achieve in my thesis is a better framing of some of the largest problems faced by contemporary humanity, including the looming risks of ecological, economic, and geopolitical collapse. In this framing, I situate these risks in the context of their connection to strategies of historical periodization, and argue that managing them will require a radically new view of religion, science, industry, and the roles that they play in producing historical discontinuity.
ContributorsNeibergall, William (Author) / Bennett, Gaymon (Thesis director) / Suk, Mina (Committee member) / School of Historical, Philosophical and Religious Studies (Contributor) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2018-05
Description
Astrobiology, as it is known by official statements and agencies, is “the study of the origin, evolution, distribution, and future of life in the universe” (NASA Astrobiology Insitute , 2018). This definition should suit a dictionary, but it may not accurately describe the research and motivations of practicing astrobiologists. Furthermore, it does little to characterize the context in which astrobiologists work. The aim of this project is to explore various social network structures within a large body of astrobiological research, intending to both further define the current motivations of astrobiological research and to lend context to these motivations. In this effort, two Web of Science queries were assembled to search for two contrasting corpora related to astrobiological research. The first search, for astrobiology and its close synonym, exobiology, returned a corpus of 3,229 journal articles. The second search, which includes the first and supplements it with further search terms (see Table 1) returned a corpus of 19,017 journal articles. The metadata for these articles were then used to construct various networks. The resulting networks describe an astrobiology that is well entrenched in other related fields, showcasing the interdisciplinarity of astrobiology in its emergence. The networks also showcase the entrenchment of astrobiology in the sociological context in which it is conducted—namely, its relative dependence on the United States government, which should prompt further discussion amongst astrobiology researchers.
ContributorsBromley, Megan Rachel (Author) / Manfred, Laubichler (Thesis director) / Sara, Walker (Committee member) / School of Mathematical and Statistical Sciences (Contributor) / School of Earth and Space Exploration (Contributor) / Department of English (Contributor) / Barrett, The Honors College (Contributor)
Created2019-12