You're not being very smart: why would evolution develop an ape cooling system that also alerts your presence to predators for miles around?
Why would evolution develop an excessive sweating mechanism when water can not be guaranteed to be found in large supply?
You just don't get it. Which came first: bipedallism or the spear?
That non-mainstream thinking can be useful to science.What are you trying to prove?
No, not proven wrong. I think that profuse sweating could have evolved as both a mechanism for expelling excess salt and as a coastal cooling mechanism.This thread was about sweating to remove excess salt. You've been proven wrong on that.
It does to some degree. Simple everyday experience confirms this.You tried to say that wiping away sweat cooled the body, it doesn't.
No.You've tried a few other angles, and been proven wrong.
I've made it easier for you by starting a new thread..Why don't you just try and stick to one topic, rather than be proven wrong on a variety?
That non-mainstream thinking can be useful to science.
No, not proven wrong. I think that profuse sweating could have evolved as both a mechanism for expelling excess salt and as a coastal cooling mechanism.
It does to some degree. Simple everyday experience confirms this.
I've made it easier for you by starting a new thread..
lol. I've read the Aquatic Ape book, I bet you haven't. Commenting on things that you have no knowledge of..why don't you try reading a book?
Fair enough. I agree that the book is horrendous scientifically, being full of holes etc. Her main idea is still very valid though, I think. The Wiki explanation itself isn't a wonderful piece either, and I can find problems in that too. This passage from Wiki caught my attention:I've read the wiki article, and I understand the criticisms of the hypothesis. Why do I need to read a flawed book?
See, I've read the dissections of the theory. That's all I need.
One hypothesis suggests that a semi-aquatic phase happened when ancestral Homo population spread along the South Asian coasts where during the Ice Ages the lowered sea levels exposed large areas of the continental shelves. In these conditions shell and crayfish would be easily procurable by a dextrous, tool-using, thick-enameled, omnivorous primate. This timing could explain why this seaside phase (100-120 metres below sea level now) did not leave many traces in the fossil and archaeological record. From the coasts their descendants might have trekked into the continents along lakes and rivers.[14]
Bipedal wading provides the advantage of keeping the head above water for breathing. Further weight to the theory is given by the similarities of the human pelvis to that of Oreopithecus bambolii, an extinct ape that lived in swamps on an island, though not a human ancestor[27][28][29].
The fear of drowning is the only phobia that we humans are born with.
Bipedal wading provides the advantage of keeping the head above water for breathing.
i would also like to point out that sweating has been found in other animals that wouldn't probably take in too much sodium. Dogs for example. They have sweat glands on the pads of their feet.
The 'diving reaction' is a major part of the Aquatic Ape hypothesis, so I'm well aware of it. The statement about the fear of drowning was given on TV in a professional scientific context, so I don't see any reason to disbelieve it.That's just not true. Babies have an innate 'diving reaction' and stop breathing when immersed, but do not exhibit any stress as would be related to a phobia.
Four long kegs, and a long neck like a Giraffe has, is an even better advantage. Bipedalism is a bit weak by comparison. Water dwelling dinosaurs had long necks too, ....
Further analysis of one skeleton's shoulder showed that these humans did not have the full set of anatomical adaptations for throwing projectiles, such as spears, during hunting.
Phlogistician; here's the article which indicates that Neanderthals didn't have a physiology which allowed them to throw spears; Humans and Neanderthals interbred?
I agree that the evidence is certainly not conclusive. That's why I've started a new thread to see whether the assumption can be justified.Sounds contradictory, that humans and Neanderthals are genetically similar enough to breed, but physiologically different, so one species cannot throw spears.
Does stuff like that not stand out, when you read these articles?
Lions and tigers are genetically compatible and are extremely difficult to distinguish without their fur. But their psychology and behavior are so different that it's almost impossible for them to mate and conceive naturally.Sounds contradictory, that humans and Neanderthals are genetically similar enough to breed, but physiologically different, so one species cannot throw spears. Does stuff like that not stand out, when you read these articles?
Hairless, clawless, and largely weaponless, ancient humans used the unlikely combination of sweatiness and relentlessness to gain the upper hand over their faster, stronger, generally more dangerous animal prey, Harvard Anthropology Professor Daniel Lieberman said Thursday (2007 April 12).
I think Expell Excess Salt