can it possible that human have big enough brain ,so we don't need many claws or some organs for fighting ?
480978
I believe that nature allowed us to have a higher intellegience, therefore eliminating the need for inherent weapons. Why else would every animal on the planet have some sort of defense mechanism, yet we don't have fangs, claws, or even protective fur. If we were to physically fight any given animal, we most certainly would lose without the aid of a physical weapon(stick, rock, knife, gun). Take even your average farm animal.. a cow. Cows have no fangs, no spikes, and certainly no claws. And yet, if you were to go head to head, you likely would lose, do to the animals shear strength. The only chance you would have is to use you larger brain, (and opposable thumb) and grab a weapon of some sort.
911759
Evolution is opportunity driven. We have evolved to be adaptable to almost any situation so can exploit almost any opportunity so we are unlikely to evolve physically. I believe that we only use a small part of our brains so we may evolve to be able to use more of our potential brain power. However I think our evolution will be in the field of technology and that with our potential brain capacity we will develop more and more technical skills. Actually this is the only thing that makes me wonder if there is actually a supreme intelligence that has set us on this path in order to achieve some purpose that we have not yet found
326070
I don't think so, because it's not a true person. Biologically, it's made up of cells, like any human, but it's not a true-born natural person. To have a soul you would have to be constructed naturally.
445302
no. as soon as the brain is cut off from the body. the body would not walk.
425041
They just need time.  It takes millions of years.  Think about this, there are mutations in humans even today.  Some people are midgets, some people have extra fingers, some people are born without certain senses, some people have extra bones.  All those are random events that are in our genes.  One day a monkey will have a random genetic mutation that makes it different than the rest.  Depending on the environment, this mutation will either enhance or inhibit his abilities compared to the other monkeys.  So, say his brain is a little bigger than the others.  It will enable him to use a rock as a weapon and even though he might not be the baddest one, he will get the priority to mate, increasing the chances that this gene will be passed on to his kids who will have even bigger brains and be able to figure out more stuff.  It takes generation after generation.
1133479
sure; just look at monkeys or chimps.  they might need to be trained, but if enough work and research was put into it, it could be possible.
1037736
Of course it is impossible to say no mat5ter what information we have because evolution has a strong random component. But at the very least we would need ot know why humans vanished in order to know what other species will also be eliminated.\n\nI would tend to favour the rodents as the next dominant group since they are omnivorous, adaptable, cosmopolitan and have evolved sociality independently numerous times.  But of course we couldn’t have predicted that the last intelligent species would originate from a small a band of browsing animals restricted to rainforest so really such criteria are only helpful, not necessary.\n\nWill it have opposable thumbs? Probably. It will certainly need some way to achieve fine manipulation of tools and logically the forelimbs will be the way that is done, which means thumbs will be needed. But of course there are numerous other options such as tentacles or trunks that would work just as well or better.\n\nWill it have fire? If it doesn’t its intelligence will be severely limited. Without an external energy source high intelligence really serves no purpose. One possible alternative to fire is of the species develops domestication techniques very early in its evolutionary history and is able to exploit other species as an energy source.\n\nWill it be vertebrate? Most likely. Vertebrates show a much higher degree of cephalisation than any other group so they have a massive headstart. If not a vertebrate then almost certainly a cephalopod.
252108
though i am offering nothing more than a personal opinion (worth about as much as any other layperson's)i'm going to row against the stream here and say that the rest of the brain is the part capable of things we learn to forget. i have seen young children just "feel" things that are beyond the grasp of older humans. maybe at one point in the past we all used instinct as we now use our senses. the structures are still there, and occasionally they still kick in, but mostly, we learn to rationalize things and think them through so we stop using that part. perhaps we were once able to sense that an earthquake was coming, or see and process two whole sets of visual information, or any number of other lost skills. perhaps in time the brain will evolve new uses for those areas, or even just use them as extra storage.\n\nor perhaps the brain needs the extra space. maybe it's a filler, so the useful parts can be in certain places. maybe padding, so the crucial parts are harder to damage. maybe it's just dissipation space, to keep the electic activity from being too concentrated and shorting our brain. i'm not an expert, but those are some ideas that come to mind.
132001
Assuming you're talking about a human being; but should be applicable to all animals containing such organs:\n\nFor existence in general; the heart, as the body can 'live' without a functioning brain or liver for a while.\n\nThen the liver, since eventually the body would poison itself.\n\nThen the brain.\n\nHowever, if you're talking about complete 'removal', you need to define the brain. Are you speaking of the cerebral cortex alone or the whole thing? In the latter case, the heart and brain are equivelent since the lower brain stem controls heart rate (as well as other vital; functions,) and without either, neither would function and the body would die within minutes.
1094493
Instinct my dear...\nINSTINCT\nYeah what sorta zoo puts its deer in the lions cage for feeding, I never heard of that one?\nAnyway, we as humans are so BLESSED with brains though obviously some never use them...\nAnimals are blessed with INSTINCTS- oh we get stuff from our ancestors too like FIGHT OR FLIGHT--Addrenaline.\nOr our temperment,size,you know...how we think, feel, react to certain things.\nBut the ANIMAL KINGDOM, since their brains for most of em are so small, They have to go on INSTINCTS from their PARENT, and their parents and their parents,parents,parents...lol\nYou get the picture?
920927
I don't think we would live if we didn't have nervous systems. Or atleast not be able to move at all. Becuase the nervous system tell our body parts to move by sending message back and forth between them. I think,you might want to double check that.
732509
That's not true.  That's actually a big misconception.  Humans use 100% of their brain.  Even something as simple as scratching your head uses a large percentage of your brain. "When you make a movement, say with your left arm, you unconsciously plan that movement and you are unaware of this planning stage. To make a single voluntary movement, the frontal cortex, basal ganglia, thalamus, and premotor cortex are involved. And this is just for one movement. If you factor in everything else that we do at one time, like searching for certain items, listening to and comprehending speech, thinking and planning, memory consolidation, etc., then really, we are doing quite a lot with our brains."\n\nhttp://faculty.washington.edu/chudler/tenper.html\nhttp://www.snopes.com/science/stats/10percnt.htm\nhttp://skeptico.blogs.com/skeptico/2006/03/only_have_10_of.html\nhttp://www.mercola.com/2004/oct/30/brain_use.htm\nhttp://www.brain-fx.com/2005/11/do_we_really_on.html\nhttp://www.alternativescience.com/no_brainer.htm\nhttp://www.abc.net.au/science/k2/moments/s1090374.htm
348403
It is a valid question, and one used against women for years (interestingly, nobody at that time seems to have thought elephants were smarter than men!).  The relationship of the anatomy of the brain to intelligence seems to have only two fairly clear correlations: 1) the amount of surface area folding (sulci and gyri) found on the frontal cortex and 2) the brain weight/body weight ratio.  Under these two correlates, men and women are the same.  There is absolutly no correlation between the size of a person and the intelligence..even though bigger humans tend to have bigger brains.  Now, using the folding and brain to body ratio, we can figure which animals "should" be very smart-and they include ravens, dolphins, and primates.  The raven finding is interesting, because every intelligence test ever given these birds (who have small brains, because they are small animals, but very large brain to body ratios) shows them to be smarter than dogs, and nearly as smart as primates.  Another interesting thing: the only animals that has *both* and larger brain to body ratio than humans *and* increased frontal cortex folding, is the dolphin...makes ya think, huh?
115873
We do use our brains but there are many functions of the brain remains unknown and not discovered.Some of the percentage makes up the mass of water,blood vessels,white blood cells...Who knows in ancient times we 've got telepathic ability?=P
1088497
Well, maybe you could use that 90.3% to figure out how you deleted 0.4% of your brain.\n\nAlso, we use all of our brain, all the time. What you are talking about is a myth. What's the point of having it if it's not used? Only the appendix isn't necessary to human living.\n\nI guess a lot of people would say that many men's penises are useless. Maybe it's true. So I guess they would two parts to their bodies that aren't needed.
729836
"War and the Pursuit of Happiness.."\n\nWARS are needed as a natural part of human evolution. When you look at war from a long-range perspective, it becomes clear that, as destructive as wars are, their very destructiveness has served as the primary force for the evolution of the human race. By mercilessly elimnating those who were unable to survive in the theater of war, wars resulted in a constant upgrading of both the physiological and intellectual acuity of man.\n\nAlthough many bright people perish in wars, the preponderance of the casualties occur among people with the limited intellectual capacity to understand the mechanics of wars and who are thus unable to avoid becoming casualties.\n\nWho would seriosly dispute the fact that smart people have higher living standards than intellectually less endowed persons do? War elimnates the intellectually less fit and thus, in the end, raises the average intelligence and the living standards of society as a whole.\n\nThroughout the ages, evolution took advantage of the 4 horsemen of the apocalypse, war, natural disasters, disease and famine.\n\nIf we succeed in eliminating armies and war, we are also eliminating war in its capacity as a powerful contributor to evolution by keeping the world population in check. We are now at 6 billion humans, scientific projections of growth predict 10 billion within 50 years...mostly in under developed countries. Humanity will reach the limits of available resources at 9-12 billion..this is not sustainable.\n\nWe can only speculate as to which path evolution will take in reducing the world from 10 to 3 billion. A battle for resources will favor those with higher levels of intelligence and rationality. Evolution never receds to irrationality, superstition and stupidity.
1082817
yes there must be a limit  for the brain functions and  storage!! but the Brain only uses 2% of its total capacity the links and the other organs such as ear nose eye cannot coup up with it !! that's why the eye needs rest after reading for a long time !! the brain usually stores the messages by replacing the unwanted with the new one which are used more!! and when you study in a certain topic in different places and different ways it gets easy for the brain to store the information in one place and link it to the other links!! so more you study the easy it'll be for you to study>>>