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Dinesh

Dinesh club

Posted: 06 Sep 2020

Taken: 06 Sep 2020

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The Rise of Homo sapiens •
Dated •
5/21/2021 •
Homo sapiens •
Winners •

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Homo sapiens / Winners

Homo sapiens / Winners
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 Dinesh
Dinesh club
. . . Sometime between 10 and 8 Ma, the common ancestor of humans and chimpanzees speciated into two distinct evolutionary taxa, or dades; one eventually evolved into modern chimpanzees and bonobos, the other into humans. We began the discussion of our origins even later, about 3.6 Ma with Astralopithecus afarensis. These early hominins were bipedal apes; they had acquired a novel way of locomotion, but their brains were little different from those of other African apes. The first hominin that paleoanthropologists assign to the genius Homo appeared about 2.5 Ma. The evolutionary fate of these first Homo is not well understood. There appear to have been several Homo-like hominins in Africa at this time, including the recently discovered Homo naledi in South Africa. These early Homo might have been ancestors of ours, or if not, an as-yet-unidentified relative might have been. In many respects, these early Homo resembled an Australopithecus. They were small, bipedal apes that almost certainly spent considerable time in trees, including sleeping. But their adaptive niche included a greater reliance on meat acquired through scavenging, a dietary shift that removed selection against large brains. This initially modest dietary change led to a significant grade shift in hominin evolution. This transition included a full commitment to terrestrial life (both sleeping and walking) and introduced a suite of necessary adaptions that resulted in the evolution of Homo erectus about 1.9 Ma. Homo erectus, who some consider to have been the first true Homo species because of its large brain, then made a dramatic geographic expansion into Asia and southern Europe. In Africa and Europe, over th e next million years or so, Homo erectus evolved into Homo heidelbergensis, whom we discussed in chapter 9. Thus, Homo heidelbergensis lived in both Africa and Europe about 600,000 years ago. In Europe, Homo heidelbergensis then evolved in relative isolation into Neandertals and other hominins like the Denisovans. In Africa, Homo heidelbergensis evolved into what ultimately became modern Homo sapiens. ~ Page 223

THE RISE OF Homo sapiens
2 years ago. Edited 14 months ago.
 Dinesh
Dinesh club
. . . the cosmologist Paul Davis, en.wikipedia.org/wiki/Paul_Davies after considering the remarkable physical coincidences that have lately been noticed in the cosmos -- the precise adjustment of natural forces that suggest the presence of fine tuning designed to make life possible -- remarks:

It seems to me that there is a genuine scheme of things; the universe is “about” something. But I am equally uneasy about dropping the whole set of problems in the lap of an arbitrary God, or abandoning all future thought and declaring existence ultimately to be a mystery. . .

Even though I do not believe Homo sapiens to be more than an accidental by-product of natural process. . .. I do believe that life and mind are etched deeply into the fabric of universe, perhaps through a shadowy, hall-glimpsed life principle. ` Page 113

The Solitary Self
14 months ago. Edited 14 months ago.

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