The Uniqueness of a Human Being: Part Two

There’s just something really special about Homo sapiens relative to all the other animal and plant life forms we share Planet Earth with. Well actually every life form is special in one way or another*, but still humans stand out from the crowd. Many people will attribute that to the alleged ‘fact’ that we were created in God’s image, although IMHO the concept of a supreme, supernatural creator being carries so much dead (philosophical baggage) weight as to have as close to zero credibility as makes no odds. Therefore, I suggest something’s screwy somewhere.

Continued from yesterday’s blog…

That brings up some interesting observations. Privacy (which is not the same thing as having your own personal space or your own territory) and embarrassment seems to have no obvious evolutionary advantage. That’s obviously the case because such concepts are not shared by any other animal life form currently on Earth, and that probably equates to past animal life forms as well. Did T-Rex care about being naked before doing battle with an equally naked Triceratops? - Probably not. Did T-Rex hide behind a tree before doing a pee? – Probably not.

Question: Why do we feel the need for privacy and feel a sense of embarrassment? Where did these concepts come from if they have no obvious survival (evolutionary) advantage?

Privacy and embarrassment tends to be associated with restroom and mating activities. Yet, from firsthand observations, my cats can go to about their litter box business in full sight of me, and of each other, without the slightest qualm. When animals mate, they don’t give a tinker’s damn if the whole darn world is watching. An animal’s gotta do what an animal’s gotta do. Further, each and every animal is in a sense strutting around in their birthday suit. Do they look the slightest bit uptight about this? Hell no.

When it comes to embarrassment, if you look at things logically and objectively, the skin around your private parts isn’t any different from the skin on your face and hands, so what’s the big deal? You don’t tend to be embarrassed over your ear lobes or your knees or which toe on your foot is longest; so why, in theory should your sex organs be singled out for cultural attention, actually inattention since they tend to be covered up?

So, there are a few more bits and pieces that make humans stand apart from the rest of the animal kingdom. But, there still has got to be a logical reason why. If embarrassment is a cultural trait as it appears to be (it’s certainly not biological) how did it ever get its start?

Sense of humour: Nearly all of the higher animals play – it’s preparation for the serious work of making a living. But play itself isn’t humour. Humans of course tell jokes, make puns – we’ve all seen people laugh in a conversation when someone says something amusing -all that’s a function of our higher intellect and our language capabilities. You wouldn’t expect animals without that sort of language ability and comprehension to connect the dots and laugh. I can tell jokes to my cats for hours on end; they’ll never understand the punch lines. However, part of our sense of humour isn’t based on language. There are the physical jokes and pranks we pull. Now some animals do have the physical ability to pull practical jokes on their peers, but I’m not aware that that happens in actual fact. My cats could if they wanted to, pick up in their teeth and hide my house keys from me as their version of a feline practical joke. Cats don’t play practical jokes. Overall however, when examining the human sense of humour,                                                        I have to ask what possible link can there be with regards to a natural evolution of a sense of humour and survival-of-the-fittest?

Blood types: To the best of my knowledge, humans are pretty unique in having about twenty different blood groups or types. That makes medical blood transfusions somewhat risky unless checks are carried out beforehand for compatibility. Not every human can receive blood from every other human.  I checked with my vet, and apparently any dog can give a transfusion to any other dog; any domestic feline’s (cat’s) blood can be transfused into any other domestic feline. I suspect much the same applies throughout the animal kingdom.

Blood types might make a bit of sense if each type of human breed had their own unique type. Maybe they once did but breeding between the races has distorted and diluted that so that now all races have all types of blood. Even so, if other animals can get by with just plain blood, just one blood type, albeit a blood type unique to that species, I don’t see why humans evolved a large variety of blood types. 

Emotions: Nearly all animals show emotions, even many of the ‘lower’ invertebrates. However, though other animals can weep - shed water from their eyes (my cats are examples here), only one animal, man, actually cries apparently as a response to an emotional state. I’m not sure what the evolutionary survival-of-the-fittest bit is about crying. I mean if you’re about to be pounced on by a sabre-tooth cat, will crying make the predator feel sorry for you; put the cat off it’s game and save you? Crying might promote bonding between humans, but there’s lots of bonding in the animal kingdom without the need for tears. So, why should there be crying in response to an emotional state. It’s a mystery to me.

Spontaneous Human Combustion (SHC): The number of documented cases of humans, for some totally unknown, maybe unexplainable reason, bursting into flame which quickly kills and consumes the victim, has reached such numbers as to no longer reside in the realm of the paranormal/pseudoscience. What’s really unexplainable is that, relative to humans, to the best of my knowledge, no other life form has ever been witnessed and documented as having had their demise via spontaneous combustion. SHC certainly confers no advantage vis-à-vis passing on your genes. You’ve been handed a Darwin Award through no fault of your own.

Here’s a weird one – our signs of aging. All life forms age; all complex life forms can die from old age, that’s obvious and a given (however, elementary particles, like electrons, don’t age). Humans show obvious signs of aging – greying hair (or losing our hair) and wrinkles and liver spots. It’s easy to tell a 20 year old human from a 40 year old from a 60 year old from someone 80 years old. In most of the rest of the animal kingdom, visible signs of age and aging aren’t obvious. In some life forms, the only visible sign of age is size – trees, fish, and reptiles – organisms that continue to grow throughout their lifespan. Frogs don’t seem to get wrinkles as they grow older! How do you tell a 10 year old elephant apart from a 30 year old elephant? My 12 year old cat looks identical to what it looked like as a two year old. No grey hairs; no pussy cat wrinkles. Yet a 12 year old domestic cat is getting on towards pensioner status given a human analogy. Why should evolution seemingly single us out for acquiring grey hair and wrinkles?

In conclusion, if these traits can not be adequately explained by good old fashioned Darwinian natural selection and evolution, then its back to the drawing board and proposing either a supernatural deity or accepting an explanation of artificial selection. The only real candidate for applying artificial selection to humans to would be an extraterrestrial intelligence. Exactly what their motive(s) might be in most of the above cases isn’t clear cut, but the ‘why’ in terms of Darwinian selection is equally unclear.

*All animals are unique or different in their own way. Felines can purr; bats have radar and dolphins have sonar; some animals can see into the infra-red or ultraviolet part of the EM spectrum; some animals can hear higher or lower frequencies than us humans.

My Top Human Anomalies: A List

It’s been said and cited again and again that the universe is not only stranger than we imagine, it’s stranger than we can imagine. Whether or not that’s true, the universe, and all it contains, like us, is surely strange indeed. 

EXTINCT ANCESTORS: Modern humans (Homo sapiens) evolved from other primates, most probably from chimpanzee stock in Africa when DNA relationships are analyzed. We have a 98% compatibility with chimpanzee DNA. However, there was a long chain of in-between hominoid species twixt chimpanzees and modern humans. Modern humans didn’t evolve willy-nilly in one jump from chimps. The interesting thing is that while all the numerous in-betweens have gone extinct, our ancestral primate chimpanzee stock didn’t. The anomaly is, why should ALL of our in-between ancestral species have gone extinct? We’re not talking one or two or three here, but dozens. It’s stretching credibility to the breaking point that one ancestral species should survive and thrive just long enough for the next in line ancestral species to evolve, and in turn survive and thrive, before going the way of the Dodo, and that this scenario was repeated again and again. There’s no real logical reason why some of our ancestral species couldn’t have survived to ultimately end up coexisting alongside modern humans to this very day.

HUMAN CULTURE & CIVILIZATION: There are two relatively unexplained turning points in the evolution of modern man when contrasted with our more primate-like ancestors. One is the acquisition of what we call culture. Culture (like art appreciation and abstract ideas like an afterlife) happened within a fairly narrow timeframe, roughly 50,000 years ago, wherever nomadic bands of hunter-gatherers gathered. Why the sudden transition? The second great leap forward, again, within a narrow timeframe, some 9000 years ago, was the transition from nomadic lifestyles to settlements – farming crops and herding now domesticated wildlife. Settlements rapidly became villages became towns became cities. While some nomadic hunter-gatherers still roamed the plains, like the Australian aboriginal, what was once that nomadic rule now became that exception to that rule. In both cases, culture and civilization, the observational evidence is rock-solid; theory can’t really explain the transition, or at least the relatively rapid transition, around the world, from the tried-and-true before-the-fact pre-cultural nomadic lifestyle to the unknown leap of an untested experiment with culture and settlements. 

CREATION, THE CONCEPT OF: One of the biggest mysteries to me is why anyone in their stark raving right mind would assume anything and everything had been created from scratch. You cannot make that assumption from first principles based on personal observations and human history. The anomaly is between what our ancient ancestors couldn’t have been expected to know, logically, with what they knew. Their knowledge, often expressed in their mythologies and religions, that there were in fact creations – the universe, stars, solar systems, life, and the human species - therefore must be based on information passed down from those with way more insight or knowledge than they could have possessed. Who passed that information on down the line?

GIFT OF FIRE: In mythologies around the world, one common tale is that some junior deity nicked off with fire belonging to the senior gods, a hot technology that the senior gods had decreed humans shouldn’t have. These junior deities, Prometheus being the best known, in defiance of their superiors give the stolen fire to humans as a gift, usually at quite some considerable peril to their own life and limb. The anomaly here is exactly why presumably humans would come up with such a tall tale in the first place, not once but often and independently in cultures around the globe. The anomaly is because humans don’t need to receive fire as a gift from the gods; fire is a natural part of the human environment. It’s as logical as saying that the gods gave the gift of animals and plants for food, or air and water to humans and prior to that the human species didn’t eat or breathe or drink. At the time humans from many cultures invented the tale of fire from the gods, they had been using fire for tens of thousands of years! Perhaps the gift of “fire” wasn’t really “fire” at all but something more dangerous that the senior gods in their wisdom knew we shouldn’t have, like a parent knows better than to let their very young child play with matches. 

HUMAN UNIQUENESS: The anomaly here is that we humans are not just a different species to all others past and present, but vastly, vastly different. Four vastly different differences in particular strike me as odd.

We alone of all the mammals are bipedal. We alone of all the primates are ‘furless’ – the “Naked Ape” as Desmond Morris described us.  We alone of all species that are and have ever been, are top of the pops in IQ; king of the hill by an extraordinary wide margin in intelligence or the ability to figure things out, call it what you will, plus the use of tools and technology way above that of any other species. Lastly, humans have very distinct facial features – it’s usually how we recognize the identity of another human we’ve seen before. With all other animal species, you’re hard pressed to tell one individual from another based on facial features. You see one sheep’s face, you’ve seen them all. You tend to recognize individuals of other species by size, color and colored patterns, some sort of deformity or abnormality, not by their distinctive facial features which don’t really exist.

If it suits all the other mammals to adopt a four-legged gait and be quadrupeds; if it suited our nearly 200 other primate cousins to retain their fur; if all other species can exist, survive, even thrive without screwdrivers, the automobile, plastics, central heating, the dishwasher, the Internet and the atomic bomb then we have an anomaly here. Every animal species is different from every other animal species, obviously, but there are differences and then there are DIFFERENCES! The human species is so far out in left field as to be nearly out of the biodiversity ballpark.

MORE NAKED APE: Humans of all mammals are the species that sweat the most. The retrograde step of temperature control via sweating instead of fur imposed two additional restrictions on us. 1) We were forced to stay close to reliable sources of freshwater. 2) It also makes us way more dependent on supplies of salt since salt is excreted from the body via sweat. Salt supplies in the natural environment are rare – so rare that once upon a time salt was so extremely valuable and you got paid in salt. It’s where we get our word, salary from. It would appear that in this case, Mother Nature goofed! Not only did this backwards evolutionary step make us more highly dependent on freshwater and salt than would otherwise have been the case, but since we lost our hairy covering in order to sweat, we’ve been forced to replace that hairy covering with artificial coverings – clothes. If only we’d kept our fur, but then clothing manufacturers and the fashion industry wouldn’t have ever existed!

INTELLIGENT DESIGN: THE EYES HAVE IT: Presumably, in the wild, animals that are active in the daytime need as close to perfect eyesight as makes no odds. They need near perfect vision to find prey, to avoid predators, to navigate, especially those animals who navigate in all three dimensions like flying birds and other creatures (like monkeys) that have an up-and-down as well as a front-back and a left-right lifestyle.

I’m not aware that any of the great apes, and that includes chimpanzees (our closest living ancestral species), are often in need of corrective lenses – they exist perfectly well without glasses, or at least that would be the case with the vast majority. Yet the reverse seems to be the case with humans, their descendents. A very large percentage of the human species have problems with their vision yet require (if they want to read, drive a car, watch TV, sew or play video games) acute vision made possible by glasses, contact lenses, surgery, etc. Presumably, before the invention of corrective lenses, people employed for certain tasks had to undergo an eye exam – like those transcribing by hand onto parchment, say the Bible; an archer in medieval times; a chariot driver in pharaoh’s army. And if you were part of the Mayan emperor’s ball team and couldn’t see very well, well you wouldn’t live to have bad vision for long. 

So, why do many humans have less than 20/20 vision, yet wildlife, even domesticated animals, seem to be able to see with visual acuity for whatever passes for their 20/20?

SPONTANEOUS HUMAN COMBUSTION: The anomaly here is that, albeit very rare, the human body can spontaneously burst into flame, killing the victim and turning the body into ash. It’s anomalous in that 1) the human body is composed mainly of water which you don’t tend to associate with fire or spontaneous combustion; 2) the body’s temperature of 98.6 degrees Fahrenheit is hardly scorching heat; 3) this anomaly isn’t noticed in animals; 4) the fire is localized to just the body and immediate surroundings despite the intense heat needed to consume a human body, and obvious sources of external fire, say a burning candle, are usually lacking. The closest theory is that perhaps the victim’s body was saturated with alcohol from excessive drinking, and alcohol of course can burn, but that rarely fitted the lifestyle of the victim and it would take one hell of a drinking binge to saturate bodily tissues with alcohol in high enough concentrations to cause the body to combust. Since animals don’t spontaneously combust, that tends to rule out body fat as a fuel source.