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Initiative in Evolution

Written by Walter Kidd

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EvolutionHair

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About this book

"Initiative in Evolution" by Walter Kidd is a scientific treatise written in the early 20th century. The book explores the intriguing debates surrounding evolutionary theory, focusing on the roles of Lamarckism and Darwinism in the context of biological evolution. With numerous illustrations, it provides a detailed examination of how modifications in organisms might arise from both inherited traits and environmental responses. The opening of the text sets the stage for a rigorous exploration of evolutionary concepts by highlighting the historical context of biological inquiry, particularly following the Great War. It introduces the idea that the study of evolution involves questioning established doctrines and emphasizes a shift toward understanding how adaptations and changes may be transmitted across generations. Kidd proposes that examining the arrangement of mammalian hair serves as a key focal point, acting as a concrete example of how environmental factors may influence evolution and how these effects could potentially align with neo-Lamarckian principles.

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Reading guide

Themes, characters and key ideas in Initiative in Evolution, written by Chaptra AI.

  • about 12 hours
  • advanced
  • analytical
  • scholarly
  • inquisitive

Walter Kidd's "Initiative in Evolution" is an early 20th-century scientific treatise that delves into the complex debates surrounding evolutionary theory, specifically contrasting Lamarckian and Darwinian perspectives. Written in the aftermath of the Great War, the book emphasizes a critical re-evaluation of established biological doctrines and explores how adaptations might be transmitted across generations. Kidd meticulously examines the potential influence of environmental factors on biological modifications, using the arrangement of mammalian hair as a primary example to illustrate neo-Lamarckian principles. Through rigorous analysis and numerous illustrations, the text presents a detailed argument for considering both inherited traits and environmental responses in understanding the mechanisms of evolution.

“The Great War, in shaking the foundations of human thought, has inevitably led to a re-examination of our established doctrines, not least in the realm of biological inquiry.”

Key themes

Lamarckism vs. Darwinism
This is the central scientific and philosophical debate explored in the book, examining the fundamental differences between Charles Darwin's theory of natural selection acting on random variation and Jean-Baptiste Lamarck's theory of the inheritance of acquired characteristics. Kidd meticulously dissects both, seeking to find common ground or argue for the relevance of Lamarckian principles.
Inheritance of Acquired Characteristics
A core tenet of Lamarckism and a primary focus for Kidd. The book explores the possibility that traits developed during an organism's lifetime due to environmental interaction or use/disuse could be passed down to offspring. Kidd attempts to provide evidence and arguments for this mechanism, challenging the prevailing Weismannian barrier.
The Nature of Scientific Inquiry and Dogma
Kidd's work is presented in a historical context that emphasizes the importance of questioning established scientific doctrines, particularly in the aftermath of the Great War. This theme highlights the dynamic and often contentious process of scientific advancement, where new evidence or perspectives can challenge entrenched paradigms.

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How did the historical context of the post-Great War era influence Kidd's approach to questioning established scientific doctrines?

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