Tag Archives: science fiction

Speech sounds

562-532 thousand years ago

Below are some reflections on language. There will be plenty more in days to come. For a science-fictional take on language, try Octavia Butler’s account of a world where language has disappeared, Speech Sounds. It’s one of her best. It won science fiction’s Hugo Award for best short story in 1984.

We’re now six months through the year 2016 at Logarithmic History. We raced through time at the rate of 754 million years a day on January 1. December 31 we’ll cover just one year per day. Today, June 30, covers 30,714 years, from 562,439 to 5531,726 years ago.

By today’s date, the universe is a lot more complicated than when we started. As we mentioned before, one of the major sources of complexity is the origin of new discrete combinatorial systems, made of small units that can be combined into larger units that have different properties than their constituents. Elementary particles are the first discrete combinatorial system to appear, already present in the early moments of the Big Bang. The different chemical elements are another major discrete combinatorial system. It took billions of years for enough heavy atoms, beyond hydrogen and helium, to accumulate from stellar explosions, allowing the complex chemistry and geology that we know on Earth. It may be that the paucity of heavy elements in the early Universe is what prevented earlier planetary systems from developing complex life.

With the origin of life comes another discrete combinatorial systems, or rather two connected systems: nucleotides strung together to make genes, which code for amino acids strung together to make proteins.

For the second half of the Logarithmic History year, we’ll be spending a lot of time looking at the consequences of another discrete combinatorial system: language. Or maybe, as with genes-and-proteins there are really two systems here: words strung into phrases and sentences, and concepts strung together into complex propositions in a Language of Thought.

The origin of modern human is one of the major transitions in evolution, comparable to the origin of eukaryotic cells, or of social insects. Language is crucial here: ants organize high levels of cooperation by secreting pheromones. Humans organize by secreting cosmologies.

Your Cuisinart, a prehistory

A famous movie cut, from 2001: A Space Odyssey, transitions from a bone club, hurled aloft by an australopithecine 2.5 million years ago, to a spacecraft in the year 2001.

2001bone

Arthur Clarke and Stanley Kubrick, coming up with the plot for the movie/book, were influenced by the popular author Robert Ardrey. In his book African Genesis, Ardrey casts human evolution as a version of the story of Cain and Abel, except in his version the peaceful vegetarians (robust australopithecines) get clobbered by the club-wielding meat-eaters (gracile australopithecines).

We were born of risen apes, not fallen angels, and the apes were armed killers besides. And so what shall we wonder at? Our murders and massacres and missiles, and our irreconcilable regiments?

Ardrey, along with Konrad Lorenz and Desmond Morris, was much in vogue in the 1960s: Sam Peckinpah was another movie director influenced by him. Unfortunately his speculations on evolution and human behavior are probably not of enduring value: he had the misfortune to take up the topic too early to take on board the sociobiological revolution pioneered by William Hamilton, Robert Trivers, and George Williams, and popularized by E. O. Wilson and Richard Dawkins.

Ardrey may not have been off-base in thinking that weaponry and warfare have been an important motive force in human biological and social evolution. But where early stone tools are concerned, a different segue, from Oldowan chopper to Cuisnart may be more appropriate.

oldowanpiccuisinart.jpg

Recent research argues that early hominins could have dramatically increased available food energy by pounding vegetables and chopping up meat into more digestible pieces. Tool use may have been an early step in our ancestors’ move to high energy diets. Meat-eating began to be important in human evolution around 2.6 million years ago. Somewhat later we see evidence that some hominins have lighter jaws and aren’t chewing as much. So to celebrate this early dietary revolution, here’s a recipe:

Steak Tartare

Place in a food processor fitted with the metal chopping blade:

1 ½ pounds lean beef (tenderloin, top round, or sirloin) cut into ½ inch cubes

Pulse until meat is coarsely ground, 7-10 seconds. Do not over-process. Remove meat to a chilled platter or individual plates and gently form into 6 individual mounds.

[Optional: Make a spoon shaped indentation on top of each mound and crack into each

1 egg yolk.]

Divide and arrange in small piles around each serving:

½ cup minced onions
½ cup minced shallots
½ cup minced fresh parsley
¼ cup minced drained capers
8-12 anchovies (optional)

Serve immediately and pass separately:

Fresh lemon juice
Worcestershire sauce
Dijon mustard
Hot pepper sauce
Freshly ground black pepper
Salt

From The Joy of Cooking 1997

Four legs good, three legs better

Having grasping hands (and having them coordinate with the eyes) is one of the important things that distinguishes primates from other mammals. And a special version of bipedalism, which allows hands to specialize for manipulation and feet for locomotion, is one of the first things that distinguishes hominins from other primates, even before hominin brains get big.

You find the same arrangement — a pair of arms with hands and a pair of legs with feet – with most science fiction aliens. (For TV and movie science fiction this just reflects the fact that aliens, pre-CGI, were mostly played by actors made up with pointy ears or fur suits or whatever.) But there are wilder possibilities, with no Earth analog. One of the most imaginative is the Pierson’s Puppeteers invented by Larry Niven:

“…. I was fed up with humanoids. Chad Oliver in particular, an anthropologist, wrote story after story claiming that this is the only workable shape for an intelligent being. The puppeteers were my first attempt to show him a shape that could evolve to intelligence. …”

puppeteers

The Puppeteers’ brains are safely tucked away inside their bodies, but they have two “necks” ending in “heads” each including one eye, one mouth, and a set of “fingers” around the lips. And the body has three legs. Decapitation is bad news for a Puppeteer,  like having a limb amputated, but not a death sentence.

Even more exotic are Vernor Vinge’s “Tines.” These are dog-like aliens who have evolved a short-range ultrasonic communication system that transmits information at such a high baud rate that a pack of half a dozen separate organisms is integrated into an enduring single individual with a shared consciousness. Losing one member of the pack is more like losing a limb, or having a stroke, than like the death of an individual. The mouths of the pack act together, as coordinated as the fingers on a hand, allowing the Tines to build up a medieval level civilization. (Vinge is a computer scientist, not an evolutionary biologist, however, and he glosses over some potential problems in Tine sociobiology: “all for one and one for all” is all very well, but which member of the pack actually gets to pass on their genes when it’s time to mate?)

But we don’t have to travel to other planets to find alternatives to two hands / two feet. Elephant trunks, for example, let elephants browse while avoiding the need for a giraffe/diplodocus-style long neck. The trunks even have “fingers” (2 for African elephants, 1 for Asian elephants) that are sensitive enough to pick up a single piece of straw.

We’ll spend a lot of time on Logarithmic History asking how human beings got to be such an extraordinary species. Hands are an important part of the story, although the elephant case suggests that hands (or their near-equivalent) are merely unusual, not absolutely unique to humans and near relations.

The bottomlands

There’s a book from back in 1954, now out of print, called Engineer’s Dreams by Willy Ley (who was most notable as a spaceflight advocate). The book lays out various grandiose engineering projects that people have proposed over the years. Some of these dreams have actually been realized: after centuries of people talking about it, there is now a tunnel under the English Channel.

Others … well …

One project the book discusses is damming the Congo River, creating a huge lake in the Congo basin, then sending the water north to create another huge lake in Chad. (There’s a small lake there now, almost dried out, which was a lot bigger 10,000 years ago when Africa was wetter.) From Lake Chad, the water would be sent further north to create a great river – a second Nile — running through Libya into the Mediterranean. All that fresh water is just running uselessly into the Atlantic now. Why not send it someplace where it’s needed?

Another engineer’s dream is to refurbish the Mediterranean Sea by building a dam across the Strait of Gibraltar. This actually isn’t an impossible project. The strait is less than nine miles across at its narrowest, and about 3000 feet deep at its deepest. A dam across the strait would have some dramatic consequences. The Mediterranean loses more water from evaporation than it gains from the rivers running into it. The difference is made up by a flow of water from the Atlantic. Cut this off, and the sea will start shrinking. You could let the Mediterranean drop 330 feet before stabilizing it, run a huge hydroelectric plant at Gibraltar, and open up a whole lot of prime Mediterranean real estate.

Sadly, whenever people have dreamed great dreams, there have always been small-minded carpers and critics to raise objections. Okay, so maybe the mayors of every port on the Mediterranean would complain about their cities becoming landlocked. And maybe massively lowering the sea level in an earthquake-prone region would lead to a certain amount of tectonic readjustment before things settled down.

So probably the Gibraltar dam will never be built (although Spain and Morocco are considering a tunnel). But we’ve seen already that Mother Nature sometimes plays rough with her children, and it turns out (although Ley couldn’t have known this back in the 50s) that damming the Mediterranean has already been done. The story begins back in the Mesozoic (late March), when the Tethys Sea ran between the northern continent of Laurasia and the southern continent of Gondwanaland. The sea was still around 50 million years ago (April 11) when whales were learning to swim. But it has been gradually disappearing over time. When India crashed into Asia and raised the Himalayas, the eastern part of the sea closed off. And as Africa-Arabia moved north toward Eurasia, a whole chain of mountains was raised up, running from the Caucasus to the Balkans to the Alps. The Tethys Sea was scrunched between these: what’s left of it forms the Caspian, Black, and Mediterranean seas.

Starting about 6 million years ago, the story takes a really dramatic turn. The continents were in roughly there present positions, but the northern movement of the African tectonic plate, plus a decline in sea levels due to growing ice caps, shut off the Strait of Gibraltar, sporadically at first. With water from the Atlantic cut off, the Mediterranean began drying out. By 5.6 million years ago, it had dried out almost completely – the Messinian Salinity Crisis. (The Messinian Age is the last part of the Miocene Period). There were just some hyper-saline lakes, similar to the Great Salt Lake in Utah or the Dead Sea in the Near East, at the bottom of an immense desert more than a mile below today’s sea level. The Nile and the Rhone cut deep channels, far below their current levels, to reach these lakes. This lasted until 5.3 million years ago, when the strait reopened and a dramatic flood from the Atlantic restored the Mediterranean.

All this was happening just around that time that hominins were committing to bipedalism. Did the cataclysmic events in the Mediterranean basin have some influence on hominin evolution in Africa? At this point we can’t say.

Harry Turtledove, prolific writer of alternative history, has a novella, Down in the Bottomlands, set on an alternative Earth in which the Mediterranean closed off, dried out, and never reflooded. In the novella, terrorists are plotting to use a nuclear weapon to reopen the Mediterranean desert to the Atlantic – sort of Engineer’s Dreams in reverse.

Paging Dr. Evil

We aren’t likely to collide with another Chicxulub-size asteroid any time soon, but even a smaller impact could be devastating. This is one argument for developing space travel. If we detected a meteor on a collision path with Earth, we could send a spaceship to nudge it out of the way. But there is always the Dark Side of the Force to reckon with …

Suppose you are a space entrepreneur, dedicated to harnessing the resources of the asteroids. You plan to mine them for their platinum group metals, valuable here on Earth, and for water and other volatiles, valuable for fuel and provisions in orbit. This is an expensive proposition, and it’s not clear that you’ll make a profit. But there is another business model. If you can direct asteroids away from Earth, and/or into Earth orbit, you can also direct them to collide with Earth. You can see where this is going: once an asteroid has been “accidentally” set on a collision course, you can charge a lot of money — a round trillion, say — to deflect it. In other words, “Nice planet you’ve got here. Too bad if anything was to happen to it.” Protection rackets are common enough in human history, and probably the cause of more suffering than all geological cataclysms – earthquakes, volcanoes, tsunamis, etc – put together. Who’s to say they won’t be part of our future too?

In case any lawyers from Planetary Resources: The Asteroid Mining Company are reading this, I should make 100% clear that I don’t seriously think any of today’s space entrepreneurs are planning anything like this, or could get away with it even if they wanted to. But it does suggest the gloomy thought that space faring and space colonization – touted by no less than Steven Hawking as an insurance plan against extinction – might actually reduce our species’ life expectancy rather than increasing it, at least until we get from interplanetary to interstellar settlement.

(Commenter sglover noted last year that “Walter Jon Williams wrote a noirish dystopia — “Hardwired” — with this premise.”)

dr.evil

“It’s Dr. Evil, I didn’t spend six years in Evil Medical School to be called ‘mister,’ thank you very much.”

The People of the Wind

163-154 million years ago

John W. Campbell, the editor of Astounding Science Fiction magazine, used to challenge writers with new premises. One of his challenges was to imagine an alien that is to mammals as mammals are to reptiles. Science fiction writer Poul Anderson took up this challenge by inventing the Ythri, flying intelligent aliens of the planet Avalon, for his novel The People of the Wind. The Ythri were able to support the high metabolisms necessary for flight because they had a special system for supercharging their bloodstreams with extra oxygen.

Since Anderson’s time, we’ve learned that birds – and some dinosaurs – are actually somewhat Ythri-like. To begin with, consider non-dinosaur reptiles, like lizards: their sprawling posture means that their legs compress and expand their lungs as they run, so they can’t run and breathe at the same time. (David Carrier, a biologist at the University of Utah, was a main guy to figure this out.) If you had traveled back in time to the Paleozoic, before the dinosaurs took over, and if you had good endurance training, you would have found the hunting easy, because the sprawling reptiles of the time would not have been able to run away for more than a short sprints. The predators to worry about would have been ambush hunters, not endurance hunters.

Dinosaurs got around these constraints in the first place by running bipedally (although some later reverted to quadrupedalism). And it now looks like at least some of them also had the sort of respiration we find in birds. Lungs are only part of birds’ respiratory systems. Birds also have an extensive network of air sacs running through their bodies, and even air passages in their bones. Air moves in both directions, in and out, like a bellows, through the air sacs, but only one direction through the lungs. This allows for more efficient circulation than mammalian lungs, where air has to move both in and out of the lungs. Just recently (2008), it’s been shown that Allosaurus, only distantly related to birds, had the same system, so it was probably widespread among dinosaurs. This breathing system may have helped dinosaurs to survive low-oxygen crises at the end of the Triassic, and flourish in the low oxygen Jurassic and Cretaceous. It may also have helped one group of dinosaurs to evolve into birds.

Anderson’s book isn’t just about respiratory physiology. It’s also about perennial issues of loyalty and identity. Avalon also has human settlers, who have so absorbed Ythri values — some of them even yearning, impossibly, to be Ythri — that they fight for an independent Avalon against an expanding Terran Empire. (Compare the movie Avatar.)

We’ll have more to say about bipedalism and breathing — and language — when human evolution comes up.

I, blockhead

No man but a blockhead ever wrote, except for money.

Samuel Johnson

Today marks the end of a second full year of the Logarithmic History blog and twitter account. I plan to continue blogging and tweeting into another year, 2017, beginning on New Year’s Day with the Big Bang. Next year, like this year, most of my material will be recycled. However I’ll continue to add new stuff (word on the street is that there will be news about the Bell Beaker folk), and revise old stuff. I’ll also post occasionally about my academic work, even when it falls outside the bounds of “logarithmic history” strictly speaking; expect future posts on kinship and cognition, kin selection, and ethnic nepotism. I may also try to dragoon friends and colleagues into doing some guest posts as well. So this is a merry-go-round: I expect to see some old followers dropping off, and new people jumping on.

“Logarithmic History,” like so much else the internet, is the work of a blockhead, at least according to Doctor Johnson. It is a labor of love, provided free of charge. But I do make this request:

 

If you’ve enjoyed the blog and/or twitter account, whether you decide to stay or to go, please tell other people about it, and suggest that they might sign up.

Thank you!

 

And for New Year’s Eve, with the universe about to start up again tomorrow, this quotation from science fiction writer Jack Vance, which I used back when beer was invented (seven thousand years ago, on September 15), is appropriate again:

The waiter departed to fill the orders. He presently returned with four tankards, deftly served them around the table, then withdrew.

Maloof took up his tankard. “For want of a better toast, I salute the ten thousand generations of brewmasters who, through their unflagging genius, have in effect made this moment possible!”

“A noble toast,” cried Wingo. “Allow me to add an epilogue. At the last moments of the universe, with eternal darkness converging from all sides, surely someone will arise and cry out: ‘Hold back the end for a final moment, while I pay tribute to the gallant brewmasters who have provided us a pathway of golden glory down the fading corridors of time!’ And then, is it not possible that a bright gap will appear in the dark, through which the brewmasters are allowed to proceed, to build a finer universe?”

“It is as reasonable as any other conjecture,” said Schwatzendale. “But now.” The four saluted each other, tilted their tankards, and drank deep draughts.

Jack Vance Lurulu p. 181

Happy New Year!