The Origin of Species Chapter 6 Part 2 - Difficulties of the Theory

In which the difficulty of complex organs arising independently in diverse species is considered through examples such as electric organs in fishes, luminous organs in insects, and the eye’s structure, leading to reflections on convergent adaptations shaped by natural selection rather than common descent. The chapter further explores the nuanced roles of seemingly trivial or beautiful structures, the balance of utility and inheritance, and the overarching laws of Unity of Type and Conditions of Existence as embraced by the theory of natural selection.