ARTICLE: Exploration and exploitation of Victorian science in Darwin’s reading notebooks

From the journal Cognition:

Exploration and exploitation of Victorian science in Darwin’s reading notebooks

Jaimie Murdock, Colin Allen, and Simon DeDeoa

Abstract Search in an environment with an uncertain distribution of resources involves a trade-off between exploitation of past discoveries and further exploration. This extends to information foraging, where a knowledge-seeker shifts between reading in depth and studying new domains. To study this decision-making process, we examine the reading choices made by one of the most celebrated scientists of the modern era: Charles Darwin. From the full-text of books listed in his chronologically-organized reading journals, we generate topic models to quantify his local (text-to-text) and global (text-to-past) reading decisions using Kullback-Liebler Divergence, a cognitively-validated, information-theoretic measure of relative surprise. Rather than a pattern of surprise-minimization, corresponding to a pure exploitation strategy, Darwin’s behavior shifts from early exploitation to later exploration, seeking unusually high levels of cognitive surprise relative to previous eras. These shifts, detected by an unsupervised Bayesian model, correlate with major intellectual epochs of his career as identified both by qualitative scholarship and Darwin’s own self-commentary. Our methods allow us to compare his consumption of texts with their publication order. We find Darwin’s consumption more exploratory than the culture’s production, suggesting that underneath gradual societal changes are the explorations of individual synthesis and discovery. Our quantitative methods advance the study of cognitive search through a framework for testing interactions between individual and collective behavior and between short- and long-term consumption choices. This novel application of topic modeling to characterize individual reading complements widespread studies of collective scientific behavior.

ARTICLE: Darwin’s body-snatchers?

This short article in the journal Endeavour takes a creationist claim about Darwin to task:

Darwin’s body-snatchers?

John van Wyhe

Abstract For decades creationists have claimed that Charles Darwin sought the skulls of full-blooded Aboriginal Tasmanian people when only four were left alive. It is said that Darwin letters survive which reveal this startling and distasteful truth. Tracing these claims back to their origins, however, reveals a different, if not unfamiliar story.

BOOK: The Invention of Nature: Alexander von Humboldt’s New World

The winner of this year’s Royal Society Insight Investment science book prize, which is awarded annually to a work of science writing intended for a non-specialist audience, went to Andrea Wulf for her fantastic biography of Prussian naturalist and explorer Alexander von Humboldt. Humboldt has long been a character of interest to me: not only is “Humboldtian science” a standard topic one learns about in history of science courses (especially Michael Dettelbach’s chapter in Cultures of Natural History), but, as readers here may know, Humboldt was an important influence on Darwin.

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Andrea Wulf, The Invention of Nature: Alexander von Humboldt’s New World (New York: Vintage Books, 2015), 552 pp.

Publisher’s description Alexander von Humboldt (1769-1859) was the most famous scientist of his age, a visionary German naturalist and polymath whose discoveries forever changed the way we understand the natural world. Among his most revolutionary ideas was a radical conception of nature as a complex and interconnected global force that does not exist for the use of humankind alone. In North America, Humboldt’s name still graces towns, counties, parks, bays, lakes, mountains, and a river. And yet the man has been all but forgotten. In this illuminating biography, Andrea Wulf brings Humboldt’s extraordinary life back into focus: his prediction of human-induced climate change; his daring expeditions to the highest peaks of South America and to the anthrax-infected steppes of Siberia; his relationships with iconic figures, including Simón Bolívar and Thomas Jefferson; and the lasting influence of his writings on Darwin, Wordsworth, Goethe, Muir, Thoreau, and many others. Brilliantly researched and stunningly written, The Invention of Nature reveals the myriad ways in which Humboldt’s ideas form the foundation of modern environmentalism—and reminds us why they are as prescient and vital as ever.

In October I had the pleasure of attending a talk that Wulf gave about Humboldt for the Oregon Hardy Plant Society:

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For similar talks, check out the recording below…

Purchase The Invention of Nature: Alexander von Humboldt’s New World through the independent Powell’s City of Books [hardcover/paperback] or Amazon [hardcover/paperback] (affiliate links).

 

ARTICLE: The impact of A. R. Wallace’s Sarawak Law paper reassessed

A new article in the journal Studies in History and Philosophy of Science Part C: Studies in History and Philosophy of Biological and Biomedical Sciences will interest readers here. Its author, the creator of Darwin Online and Wallace Online, has devoted much time and research in reevaluating the story of Wallace and Darwin.

The impact of A. R. Wallace’s Sarawak Law paper reassessed

John van Wyhe

Abstract This article examines six main elements in the modern story of the impact of Alfred Russel Wallace’s 1855 Sarawak Law paper, particularly in the many accounts of Charles Darwin’s life and work. These elements are: 1 It was Wallace’s first avowal of evolution; 2 Wallace laid out the theory of evolution minus only a “mechanism”; 3 Darwin failed to see how close Wallace was approaching; 4 Lyell did see how close Wallace was approaching; 5 Lyell urged Darwin to publish because of Wallace; 6 Darwin wrote to Wallace to warn him off his path. Each of these are very frequently repeated as straightforward facts in the popular and scholarly literature. It is here argued that each of these is erroneous and that the role of the Sarawak Law paper in the historiography of Darwin and Wallace needs to be revised.

You can read this article online or download the PDF for free.

ARTICLE: The Creativity of Natural Selection? Part I: Darwin, Darwinism, and the Mutationists

A new article in the Journal of the History of Biology:

The Creativity of Natural Selection? Part I: Darwin, Darwinism, and the Mutationists

John Beatty

Abstract This is the first of a two-part essay on the history of debates concerning the creativity of natural selection, from Darwin through the evolutionary synthesis and up to the present. Here I focus on the mid-late nineteenth century to the early twentieth, with special emphasis on early Darwinism and its critics, the self-styled “mutationists.” The second part focuses on the evolutionary synthesis and some of its critics, especially the “neutralists” and “neo-mutationists.” Like Stephen Gould, I consider the creativity of natural selection to be a key component of what has traditionally counted as “Darwinism.” I argue that the creativity of natural selection is best understood in terms of (1) selection initiating evolutionary change, and (2) selection being responsible for the presence of the variation it acts upon, for example by directing the course of variation. I consider the respects in which both of these claims sound non-Darwinian, even though they have long been understood by supporters and critics alike to be virtually constitutive of Darwinism.