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Showing posts with the label cave painting

Certain mental disorders may have evolved as costs of attractive mental traits

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I find costly traits fascinating, even though they pose a serious challenge to the notion that living as we evolved to live is a good thing . It is not that they always deny this notion; sometimes they do not, but add interesting and somewhat odd twists to it. Costly traits have evolved in many species (e.g., the male peacock’s train) because they maximize reproductive success, even though they are survival handicaps. Many of these traits have evolved through nature’s great venture capitalist – sexual selection. (Source: Vangoghart.org) Certain harmful mental disorders in humans, such as schizophrenia and manic–depression, are often seen as puzzles from an evolutionary perspective. The heritability of those mental disorders and their frequency in the population at various levels of severity suggests that they may have been evolved through selection, yet they often significantly decrease the survival prospects of those afflicted by them (Keller & Miller, 2006; Nesse & Williams, ...

Atheism is a recent Neolithic invention: Ancestral humans were spiritual people

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For the sake of simplicity, this post treats “atheism” as synonymous with “non-spiritualism”. Technically, one can be spiritual and not believe in any deity or supernatural being, although this is not very common. This post argues that atheism is a recent Neolithic invention; an invention that is poorly aligned with our Paleolithic ancestry. Our Paleolithic ancestors were likely very spiritual people; at least those belonging to the Homo sapiens species. Earlier ancestors, such as the Australopithecines, may have lacked enough intelligence to be spiritual. Interestingly, often atheism is associated with high intelligence and a deep understanding of science. Many well-known, and brilliant, evolution researchers are atheists (e.g., Richard Dawkins ). Well, when we look at our ancestors, spirituality seems to have emerged as a result of increased intelligence. Spirituality can be seen in cave paintings, such as the one below, from the Chauvet Cave in southern France. The Chauvet Cave is b...