Evolving Ourselves:
I have to say. I really liked this book. It's smart and visionary and irreverent and just plain fun. A great summer read.
BTW: It's featured on the edge.org summer reading 2015 list. If you're not familiar with edge.org, do yourself a favor and go check it out.
It's like new wave for old smart people :-)
Evolving Ourselves is authors Juan Enriquez (of TED talk fame) and Steve Gullans (also a TED talk guy) book length argument that the Neo Darwinian model of evolution via natural selection no longer applies to humans.
Not by a long shot.
In Evolving Ourselves they argue that the Neo Darwinian model needs a special modification if it's going to include us.
They assert that humans are only marginally effected by (a) natural selection and (b) random mutation due to our practices of (c) unnatural selection and (d) nonrandom mutation.
UNNATURAL SELECTION
Let me see if I can start from the beginning.
Although it's at times hard to believe. People are like the animal kingdoms world champions of cooperation.
Birds fly, whales are huge, giraffes have longnecks and people cooperate.
People think that what makes us bad ass is that were smart. Nope. We're smart so that we can cooperate.
We're actually only smart because we cooperate. The only reason people can become super specialized in their field of knowledge and create cool technology and shit is because we can get together and work on stuff.
Allow me to explain.
Reciprocal Altruism:
Imagine two cave man dudes, (1) Grog and (2) Unk.
Both guys make (less than spectacular) axes.
• Grog makes great axe heads ( 4 out of 5 stars) but crappy axe handles (2 out of 5 stars = 6 out of 10 stars total)
• Unk makes great axe handles ( 4 out of 5 stars) but crappy axe heads (2 out of 5 stars = 6 out of 10 stars total)
It takes both Grog and Unk 2 hours to make 1 mediocre (6 out of 10 stars) axe.
For both Grog and Unk:
2 hours = 1 mediocre (6 out of 10 stars) axe.
What happens if:
• Grog spends 2 hours making 2 great (4 out of 5 star) axe heads
• Unk spends 2 hours making 2 great (4 out of 5 star) axe handles
• Grog and Unk spend .5 hours trading 1 great (4 out of 5 star) axe head, for 1 great (4 out of 5 star) axe handle
• Grog and Unk spend another .5 hours assembling their great (8 out of 10 star) axes
Now, for both Grog and Unk:
3 hours = 1 great (8 out of 10 star) axe.
With a little extra effort and cooperation, they each get 1 great axe.
That is a great deal right there, but it gets better.
What happens if:
• Grog and Unk become expert specialist in their respective fields
• both Grog and Unk focus and innovate, and now both of them can produce awesome (5 out of 5 star) products, in less time (.5 hours)
Now .5 hours = 1 awesome ( 5 out of 5 star) axe head/handle
• further more, they streamline their trading and assembly processes to .25 hours to trade and .25 hours to assemble
Now .5 hours total market and assembly time.
The whole process took .5 hours production of awesome (5 out of 5 star) axe head/handle, + .5 hours market and assembly time, to make 1 awesome (10 out of 10 star) axe each.
Or, to put it more simply:
For both Grog and Unk:
• 1 hour (start to finish) = 1 awesome (10 out of 10 star) axe each.
We started with:
• 2 hours = 1 mediocre (6 out of 10 stars) axe each
With a little cooperation and organization, we ended up with
• 1 hour = 1 awesome (10 out of 10 star) axe each
This is a huge Win Win for both Grog and Unk.
This is known as a nonzero sum transaction.
Nonzero means that both participants get more out of the cooperative transaction than if they had each gone it alone.
Nonzero transactions a.k.a. Reciprocal Altruism is what allowed humans to dominate the planet (for better or for worse).
Other species demonstrate Reciprocal Altruism, but none to the extent that people do. As previously mentioned, humans are the planets grand champions of cooperation.
It took a team of millions of people to create the iPhone I'm writing this review on, and the Internet infrastructure I'm delivering this review over, and the web sight I'm delivering it to.
And that just this one little blip of human production.
How (exactly) do we out cooperate every other species?
There are lots of theories about why humans are so dang good at creating and maintaining systems of Nonzero transactions. But the single most salient factor that simply jumps off the page is language.
Language (e.g. English and Mathematics) engenders constructs such as; ideologies, religions, rules, codes of conduct, laws etc.
These constructs (and others like them) are the foundation of culture and technology.
According to Enriquez and Gullans
Once people stepped into the realm of culture and technology, we stepped out of the iron grip of natural selection on to the turbocharged escalator to obesity.
Unnatural selection ladies and gents.
Of course the next chapter of Grog and Unk's story involves creating surplus, hiring others to do the labor, domesticating plants and animals, and you know the rest of the story. It ends on your sofa.
Domestication:
Dmitri Konstantinovich Belyaev was a Russian geneticist who conducted a remarkable experiment to see if it was possible to turn wild Siberian foxes into cute, cuddly domesticated pets.
The experiment has been described by the New York Times as "arguably the most extraordinary breeding experiment ever conducted."
Just to qualify. It was done in the 1950's, so it's the most remarkable breeding experiment ever conducted before the invention of the internet. The Internet is actually one big breeding experiment, and it's actually more remarkable than this one. But this one is still really good. It goes like this.
Beginning in the 1950s, in order to uncover the genetic basis of the distinctive behavioral and physiological attributes of domesticated animals, Belyaev and his team spent decades selectively breeding the wild silver fox for friendliness.
The way they did it was they only bread those individuals in each generation that showed the least fear of humans.
After several generations of controlled breeding, the silver foxes no longer showed any fear of humans and often wagged their tails and licked their human caretakers to show affection.
But it gets better. Not only did their behavior change. Their outward appearance changed too. They started displaying the typical features lap dogs.
They began to display spotted coats, floppy ears, curled tails, larger heads, as well as other physical attributes commonly found in domesticated animals, thus confirming Belyaev’s hypothesis that both the behavioral and physical traits of domesticated animals could be traced to "a collection of genes that conferred a propensity to tameness".
Neoteny:
Refers to the retention, by adults in a species, of traits previously seen only in juveniles.
In neoteny, the physiological (or somatic) development of an animal or organism is slowed or delayed.
Ultimately this process results in the retention, in the adults of a species, of juvenile physical characteristics well into maturity.
One way of thinking about domestication, is that the features of juveniles of the species are conserved into adulthood.
In other words, our cute little lap dogs are like wolves who have been selectively bread to be perma-puppies.
Some evolutionary developmental (evodevo) theorists posit that humans are essentially neotenos chimpanzees.
In a sense, we are domesticated chimps.
But it gets even better than that.
According to the authors, we are becoming even more neotenos as we become even more domesticated.
Think about it.
What happens to our cultures most aggressive men. The ones who don't become CEO's or cage fighters pretty much end up in prison.
The men who are valued as workers and fathers in our culture are increasingly the "tame as fuck" gortex vagina Seattle dads. They even look (and frequently act) like big babies.
Not that there's anything wrong with that.
So anyway. Enriquez and Gullans claim were domesticating ourselves.
Whereas Darwin pretty much shook western civilization down to its foundation and essentially revolutionized the way we se ourselves and the world we live in by asserting that we humans are have descended from apes.
Enriquez and Gullans make the rather plainly incontrovertible claim that were all becoming a bunch of giant toddlers.
I can't exactly see another Inherit The Wind type trial emerging from what ever debate happens over this earth shatteringly obvious position.
NONRANDOM MUTATION
Hologenome:
Enriquez and Gullans Posit that humans have least four parallel evolving genomes—
1: Core DNA
2: Epigenome
3: Microbiome
4: Virome
More on all of these in mere moments.
But suffice it to say, every human, plant and animal possesses these four genomes, which considered as a whole, are referred to as the “hologenome.”
The sub-genomes (1-4) interact with one another, evolve at very different rates, and define your basic biology and attributes throughout life.
Eventually they come together and encode the heritable traits and behaviors that you pass on to your descendants and future generations.
1: Core DNA
According to The authors
Humankind’s core DNA genome has been essentially stable for tens of thousands of years.
And that's a good thing right?
Each generation historically experiences tiny, random mutations; 50 to 100 of the 6.4 billion letters that make up your DNA are different, at birth, from those of your parents.
Apparently it takes a really long time for DNA to mutate.
It's hella stable.
Again, that's a really good thing.
This is particularly true post Grog and Unk, as societies made it illegal for you (and anyone else for that matter, we're not just picking on you) to impregnate your mom and sister.
Another good (nay great) thing.
This lead a lot of biologists to assume people stopped evolving.
But there is a whole lot of adaptation going on, just below the core genome.
2: Epigenome
Epigenetics refers to the domain of cellular and physiological trait variations that are caused by external or environmental factors that switch genes on and off.
This means that some of our genetic expression is influenced by mom and dads environment, and our environment.
An epigenome consists of a record of the chemical changes to the DNA and histone proteins of an organism; these changes can be passed down to an organism's offspring.
So not all phenotypic changes are caused by changes in the DNA sequence.
Unlike the underlying genome which is largely static within an individual, the epigenome can be dynamically altered by environmental conditions.
Human diversity and evolution is highly concentrated in our epigenetic switches; how genes are turned on or off, expressed with greater potency or silenced.
The authors assert that human culture and technology are driving the fuck out of evolution on the epigenetic level.
So what happens to humans after 10 generations of sofa surfing and concurrent surfing of the world's most remarkable breeding experiment?
I guess we're finding out.
3: Microbiome
Refers to the squadrillians (a large number) of bacteria that live in and on us, without whom we would simply die.
Within the microbiome, evolution occurs quickly; some bacteria can go through 2,600 generations in just over a month.
So what happens when people seriously alter (i.e. totally fuckin upend) the microbiome?
"As humans declare broad warfare on microbes, as they radically alter ecosystems, adding toxins, antiseptic soaps, mouthwashes, pharmaceuticals, nutraceuticals, global travel, urban lifestyles, changing diets, and leave rural existence behind, they guide/influence rapid microbial evolution".
Toss antibiotics into the mix and this is yet another way humans are driving the fuck out of our own evolution.
"So while you inherited your intial microbiome from Mom, they aren’t your great-grandma’s microbes anymore".
That's right. The re-engineering of the microbiome may be one of the major reasons for the obesity epidemic. Apparently livestock are given antibiotics so they will gain weight. I guess reducing your guts microbiodiversity equates to increasing the size of your ass.
Anyway, it's such a common practice that the antibiotics are leaching into everything, including farm fresh produce via manure fertilizers.
Dude. You mean those big salad's and green juices are making us fat too. Oh fuck, were fucked!
4: Virome
Finally, our fourth genome, the virome (the viruses we depend on for dear life), mutates and evolves at a blazingly rapid rate.
"We have only begun to catalog the actual specific actors with the virome, so it is still early days with regard to understanding exactly how it affects us, from day to day or from generation to generation. One thing is certain: With our domesticated lifestyles, global imprint, and unnatural activities, the “typical” virome today must be very different from the one Darwin indirectly observed. And we are now also beginning to tame and deploy viruses, learning to rapidly edit them for our own purposes".
So why are viruses so important to our genetic expression?
"Sometimes viral DNA simply embeds itself in your own human DNA, where it can lie dormant or sometimes come back to life when you least want it, as occurs with recurring cold sores, shingles from a long-past chicken pox, and even some cancers—particularly when our immune systems become weak. On some occasions, viral code can end up in the DNA in your sperm and eggs, which then gets passed on to future generations".
Okay, I'm beginning to get it. When we create antiviral shit, we radically nuke the virome. This could lead to a crazy new viromic landscape. God knows what could emerge from the wasteland.
I guess that's yet another way we are pushing the envelope with unnatural selection.
Let's just hope the envelope comes back with a paycheck in it instead of a maxed out credit card bill.
Great book.
4 stars!!!!