Even With Millions Of Years Of Our Evolution,Why Did We Evolve to be Savvy So Much Later?
In a book called "The Descent of Woman" author/biologist Elaine Morgan puts forth the explanation that we walked the world of the savanna because like the manatee, the dolphin, elephant and other animals, at some time in our and their evolution we evolved from the land to the water. Like some other mammals, in the explanation proposed in her book, the author, (or authorama perhaps!) says we lost most of our hair because like other animals of this type we were more streamlined in the water, and many other features of our anatomy would be explained, like our nose being with the air at the base so we could breathe well, our tears of salt like many marine animals to keep out too much salt water near the shore, and for example why a woman's wig is stronger when she's pregnant (so the baby can hold on while the mother and baby are out in the water). Or e.g that we have a completely different cooling system from other primates, subcutaneous fat (presumably to insulate from the water) and kidneys much like aquatic mammals.
And we are smart like other mammals who like the water in this scenario because like them we went in the water in one of the great ages in our evolution. Like claws and teeth, too much specialization for animals that lived on land would have not caused brilliance if with more narrow range of movement or articulation, in the realm of the actual physics much like in the realm of sleep and dreams, comedy is serious business. With a plethora of types of motion in the water, the mammals who evolved like us would have had more focus in more general computation and comedy and would evolve more brilliant solutions. We wouldn't have considered just such a limited range of values.
There are many other things the assumption that we went in the water like the elephants would explain, elephants are so well adapted to the water that they swim from island to island in the Mediterranean and use their trunk to breathe above the ocean waves..
To evolve from the land to the more old wave sounds I think our evolution to the water and beyond would have started perhaps at the mouth of rivers in the tropics were most life now lives. This would have been a worthwhile realm for this hour in our evolution with an environment of calm not like the sometimes unsafe ocean waves, so more conducive to survival. Basically, because of this being an optimal region upstream, I think all life that evolved like we did may have achieved evolution of this type in the same general zone.
This is the realm where the rivers meet the ocean, the estuaries, where most life lived for most of evolution's ages. Most if not all fossils from the time of Morgan's hypothesis are found near the shores of ancient lakes and shores.
So we would be living a bit upstream of where the river would meet the shore, then we would have walked out into the water and stood up because we could walk further out from the shore to be out of the reach of wolves and other shore predators, which is one of the main reasons in Descent of Woman (the book mentioned above) the author says we walked to the water that was a few feet deeper. Then after we had evolved upright with the lift of the water, it would have given us more advantage like being able to see further from higher up, and to reach higher up in the trees for lunch, and we would have evolved in return to land because of this advantage.
An interesting question is, if most types of life that evolved at some point in their evolution into the water would have lived in the same general zone a good bit above where the river meets the ocean, why did we evolve back to land but the dolphins and whales evolved out into the ocean water? One of the main reasons would have been that we indeed got more advantage in a higher vantage.
Being able to see and reach further may have been what moved our own evolution in particular to return towards land. It seems easy enough to believe for any animal that would evolve out into waters of some depth that they would have been uplifted by the water, and would have the same advantage we received in our own evolution, so any animal of this type at this point in their evolution would have a better chance of higher reach, including the whales and dolphins.
So just as they have found whales in fossils with both feet and fins, it's possible that fossils may be found with either whales or dolphins who may have walked on just two fins somewhat in their evolution. It's not impossible because there's no reason to distinguish us from them in evolution by this. Standing on two feet because of the lightness of the water is not something we invented, the physics were the same so it could have happened to any life that evolved like us.
The oldest footprints of our distant relatives they have found are 3.7 million years ago on the plains of Africa fossilized by the pumice from a nearby volcano after our ancient relatives walked in the muddy rain that afternoon. This is evidence we were higher up in our vision of life early in our evolution. If we stood upright mostly because it was easy via the uplift of the water, I think we would have evolved our hands in a more distinct second step later for the reason of reaching up in the branches.
You've always heard how we evolved to reach up and grab the lunch above us in the branch, and this was how we walked the earth in ancient, prehistoric times. I think this would have been too much at once and we would have developed our hands and stood higher in much the same hour of evolution if this were so. If we evolved both the higher reach and our hands at the same time, the usual explanation would have us being bright sooner without the wait between these two ages if they were from the same cause, to reach up where our lunch was in the branch above.
Click Here. In both explanations we're bright because of our hands, and when our hands evolved we would then be smarter at that time of the hour in our evolution. "Slower" if just by luck would have a longer wait from the time of our higher reach and vision to the evolution of our hands, and then near this time our brains would have suddenly become more robust. If this was by just mostly good fortune for us, just by luck there would be a wait more duration from the hour of our higher station in life to the evolution of our hands and then perhaps our more advanced brains because of this (faster than by evolution's slow way of life if in just one step and time over perhaps just tens of thousands instead of hundreds of thousands to millions of years. The time of these two steps may be generally only somewhat near in the history of our evolution. Even if only a moderately strong correlation is found, this would be of worth to tell us how important the change in our hands was to our advance to higher evolution and then civilization.).
The reason we evolved back out of the water might be because we stood upright to reach the branches of the berries out over the water. And by being semi aquatic we would have already have been semi upright and the process would have been constant. The dolphins and other mammals looked to the waves and we looked up to the branches.
If we evolved how we walk in another unrelated and slow step than how we may have evolved our hands, this would be more like evolution is generally thought to be, with more small steps by good luck instead of fewer large steps.
Whales elephants and manatees we are more unlikely to have been smarter than us even if they having evolved into the water like us were more likely to have stayed aquatic. And the rest of the land mammals are much less likely than even the whales or manatees to be as smart as us, the explanation being that evolution would only sometimes lead to aquatic evolution for land mammals and it wouldn't really converge by necessity on how we walk and our hands being of more use and our leaving the water beyond this. The luck would be sort of a two layer filter and just by luck we won the bet, or evolution would of thought of this advantage for many other types of land animals with more than 600 million years of evolution.
My Solutions To Objections Nina J (Anthropologist) Has About Our Evolution in and Out of the Water
CLICK HERE. to buy Elaine Morgan's book about evolution.
"Safety in numbers for speeding drivers Wed May 7, 11:28 AM ET
BEIJING (Reuters) - Speeding drivers in south China are getting away thanks to machines which switch the numbers on the licence plates in seconds, state media said on Tuesday"
If they use the light up plates to operate their machine, they would never be asleep at the wheel!
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