Human Anthropology

[perpetual motion]

Just a small question about the human arm bones.

How many years do they say that the human arm took to rotate around 160 degrees around to the position
it is in now from walking on all fours? Just extend your arm forward and try to rotate your whole arm
as to put your elbow forward as to walk on all four feet like the rest of the animal kingdom walks. Wont
happen without breaking something. How many centuries?

Just sort of looking around at things.

[jimmcginn]

Well, the standard assumption is that bipedalism became adaptive and the rest of human morphology followed. I think something very different took place. The paleoclimatic record indicates the emergence of a monsoon climate roughly correlating with the earliest years of hominid evolution. This caused the emergence of a distinct dry season. Consequently, communities of our earliest chimpanzee-like ancestors began to protect territorial resources from other herbivorous species who had to be driven off so that the whole community would still have access to fresh water and food through the dry season. Rock thrown, stick wielding and bipedalism emerged as part of a general communal strategy to protect these resources in order to survive the dry season. Bipedalism, therefore, did not emerge as a locomotive strategy but as a strategy to free the arms for rock throwing and stick wielding.

James McGinn

[tholden]

For any hominid to have ever evolved into a human, that hominid would have to have lost everything he needed to live, particularly:

[list=]
[*]His fur while ice ages were going on.
[*]Almost all of his night vision while surrounded by large predators which could see quite well in the dark.
[*]Almost all of his sense of smell while trying to make it as a land prey animal.
[/list]


Chuck Darwin himself said that if anybody could ever demonstrate a single feature of a living creature which could not conceivably have arisen step-wise via mutations with each step representing some sort of an advantage over the previous, than his theory would crash and burn.
There is more than one choice for such a feature but,of all the things which could never possibly evolve, my pick for #1 is flight feathers.

Consider feathers, which come in more than one form. Down feathers serve for insulation and are not that much different from hair or fur. An evolutionist could talk about fur mutating into down feathers and not sound totally stupid. But flight feathers are so totally different from down feathers that you'd need TWO mutations to get to them i.e. one mutation to get from fur to down feathers and then another to get from down feathers to flight feathers.



Flight feathers involve a complex system of barbules and hooks as the image shows to create the strength needed to bear weight. Down feathers don't have any of that stuff.

Flight feathers are asymmetric (one side shorter than other) and they pivot so as to open and let air pass through on upstrokes and close again on down-strokes and the short side is the locking side.

The question is, what kind of a mutation would cause down feathers to mutate into flight feathers ONLY ON THE CREATURE'S ARMS where they will be needed after other mutations turn those arms into wings??

The idea of flying birds evolving is ridiculous and the idea of humans evolving from anything not human is just as ridiculous. Humans are basically aquatic mammals (which do not require a decent sense of smell) and we are bright-world adapted. The darkness which the old creatures of our planet had to deal with was that of the "Purple Dawn", and not ordinary night-time as we experience now.

Human origins, the real version:

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15-minute intro to the basic idea of the Ganymede hypothesis:

https://www.youtube.com/watch?v=ZUR6ROFnlQE?