nhaliday + earth   63

An adaptability limit to climate change due to heat stress
Despite the uncertainty in future climate-change impacts, it is often assumed that humans would be able to adapt to any possible warming. Here we argue that heat stress imposes a robust upper limit to such adaptation. Peak heat stress, quantified by the wet-bulb temperature TW, is surprisingly similar across diverse climates today. TW never exceeds 31 °C. Any exceedence of 35 °C for extended periods should induce hyperthermia in humans and other mammals, as dissipation of metabolic heat becomes impossible. While this never happens now, it would begin to occur with global-mean warming of about 7 °C, calling the habitability of some regions into question. With 11–12 °C warming, such regions would spread to encompass the majority of the human population as currently distributed. Eventual warmings of 12 °C are possible from fossil fuel burning. One implication is that recent estimates of the costs of unmitigated climate change are too low unless the range of possible warming can somehow be narrowed. Heat stress also may help explain trends in the mammalian fossil record.

Trajectories of the Earth System in the Anthropocene: http://www.pnas.org/content/early/2018/07/31/1810141115
We explore the risk that self-reinforcing feedbacks could push the Earth System toward a planetary threshold that, if crossed, could prevent stabilization of the climate at intermediate temperature rises and cause continued warming on a “Hothouse Earth” pathway even as human emissions are reduced. Crossing the threshold would lead to a much higher global average temperature than any interglacial in the past 1.2 million years and to sea levels significantly higher than at any time in the Holocene. We examine the evidence that such a threshold might exist and where it might be.
study  org:nat  environment  climate-change  humanity  existence  risk  futurism  estimate  physics  thermo  prediction  temperature  nature  walls  civilization  flexibility  rigidity  embodied  multi  manifolds  plots  equilibrium  phase-transition  oscillation  comparison  complex-systems  earth 
august 2018 by nhaliday
Harnessing Evolution - with Bret Weinstein | Virtual Futures Salon - YouTube
- ways to get out of Malthusian conditions: expansion to new frontiers, new technology, redistribution/theft
- some discussion of existential risk
- wants to change humanity's "purpose" to one that would be safe in the long run; important thing is it has to be ESS (maybe he wants a singleton?)
- not too impressed by transhumanism (wouldn't identify with a brain emulation)
video  interview  thiel  expert-experience  evolution  deep-materialism  new-religion  sapiens  cultural-dynamics  anthropology  evopsych  sociality  ecology  flexibility  biodet  behavioral-gen  self-interest  interests  moloch  arms  competition  coordination  cooperate-defect  frontier  expansionism  technology  efficiency  thinking  redistribution  open-closed  zero-positive-sum  peace-violence  war  dominant-minority  hypocrisy  dignity  sanctity-degradation  futurism  environment  climate-change  time-preference  long-short-run  population  scale  earth  hidden-motives  game-theory  GT-101  free-riding  innovation  leviathan  malthus  network-structure  risk  existence  civil-liberty  authoritarianism  tribalism  us-them  identity-politics  externalities  unintended-consequences  internet  social  media  pessimism  universalism-particularism  energy-resources  biophysical-econ  politics  coalitions  incentives  attention  epistemic  biases  blowhards  teaching  education  emotion  impetus  comedy  expression-survival  economics  farmers-and-foragers  ca 
april 2018 by nhaliday
Uniformitarianism - Wikipedia
Uniformitarianism, also known as the Doctrine of Uniformity,[1] is the assumption that the same natural laws and processes that operate in the universe now have always operated in the universe in the past and apply everywhere.[2][3] It refers to invariance in the principles underpinning science, such as the constancy of causality, or causation, throughout time,[4] but it has also been used to describe invariance of physical laws through time and space.[5] Though an unprovable postulate that cannot be verified using the scientific method, uniformitarianism has been a key first principle of virtually all fields of science.[6]

In geology, uniformitarianism has included the gradualistic concept that "the present is the key to the past" (that events occur at the same rate now as they have always done); many geologists now, however, no longer hold to a strict theory of gradualism.[7] Coined by William Whewell, the word was proposed in contrast to catastrophism[8] by British naturalists in the late 18th century, starting with the work of the geologist James Hutton. Hutton's work was later refined by scientist John Playfair and popularised by geologist Charles Lyell's Principles of Geology in 1830.[9] Today, Earth's history is considered to have been a slow, gradual process, punctuated by occasional natural catastrophic events.
concept  axioms  jargon  homo-hetero  wiki  reference  science  the-trenches  philosophy  invariance  universalism-particularism  time  spatial  religion  christianity  theos  contradiction  noble-lie  thinking  metabuch  reason  rigidity  flexibility  analytical-holistic  systematic-ad-hoc  degrees-of-freedom  absolute-relative  n-factor  explanans  the-great-west-whale  occident  sinosphere  orient  truth  earth  conceptual-vocab  metameta  history  early-modern  britain  anglo  anglosphere  roots  forms-instances  volo-avolo  deep-materialism  new-religion  logos 
january 2018 by nhaliday
The weirdest people in the world?
Abstract: Behavioral scientists routinely publish broad claims about human psychology and behavior in the world’s top journals based on samples drawn entirely from Western, Educated, Industrialized, Rich, and Democratic (WEIRD) societies. Researchers – often implicitly – assume that either there is little variation across human populations, or that these “standard subjects” are as representative of the species as any other population. Are these assumptions justified? Here, our review of the comparative database from across the behavioral sciences suggests both that there is substantial variability in experimental results across populations and that WEIRD subjects are particularly unusual compared with the rest of the species – frequent outliers. The domains reviewed include visual perception, fairness, cooperation, spatial reasoning, categorization and inferential induction, moral reasoning, reasoning styles, self-concepts and related motivations, and the heritability of IQ. The findings suggest that members of WEIRD societies, including young children, are among the least representative populations one could find for generalizing about humans. Many of these findings involve domains that are associated with fundamental aspects of psychology, motivation, and behavior – hence, there are no obvious a priori grounds for claiming that a particular behavioral phenomenon is universal based on sampling from a single subpopulation. Overall, these empirical patterns suggests that we need to be less cavalier in addressing questions of human nature on the basis of data drawn from this particularly thin, and rather unusual, slice of humanity. We close by proposing ways to structurally re-organize the behavioral sciences to best tackle these challenges.
pdf  study  microfoundations  anthropology  cultural-dynamics  sociology  psychology  social-psych  cog-psych  iq  biodet  behavioral-gen  variance-components  psychometrics  psych-architecture  visuo  spatial  morality  individualism-collectivism  n-factor  justice  egalitarianism-hierarchy  cooperate-defect  outliers  homo-hetero  evopsych  generalization  henrich  europe  the-great-west-whale  occident  organizing  🌞  universalism-particularism  applicability-prereqs  hari-seldon  extrema  comparison  GT-101  ecology  EGT  reinforcement  anglo  language  gavisti  heavy-industry  marginal  absolute-relative  reason  stylized-facts  nature  systematic-ad-hoc  analytical-holistic  science  modernity  behavioral-econ  s:*  illusion  cool  hmm  coordination  self-interest  social-norms  population  density  humanity  sapiens  farmers-and-foragers  free-riding  anglosphere  cost-benefit  china  asia  sinosphere  MENA  world  developing-world  neurons  theory-of-mind  network-structure  nordic  orient  signum  biases  usa  optimism  hypocrisy  humility  within-without  volo-avolo  domes 
november 2017 by nhaliday
The war between the Aesir and Vanir – Gene Expression
One of the hypotheses about the origins of the Vanir is that they were agricultural fertility gods. As it happens many of the hypothesized borrowings of non-Indo-European words into Germanic are of agricultural nature. Additionally, the table within the paper illustrates that many of these words span very different Indo-European language families. The implication is strong that Minoan, Basque, and the pre-Indo-European languages of Northern Europe are genetically related to each other.


For example, the thesis that pre-Indo-European religion revolved around cthonic deities of the earth (e.g., the Tuatha de Danann) makes a lot more sense if you believe that these people were agriculturalists. In contrast, the Indo-Europeans from the east arrived as pastoralists, and it is not, therefore, a surprise that the one Indo-European god who has an undisputed cognate across all branches of the Indo-European peoples is the sky god, whether he is known as Zeus, Jupiter, or Dyauṣ Pitār.
gnxp  scitariat  religion  myth  sapiens  gavisti  farmers-and-foragers  roots  history  antiquity  europe  archaeology  conquest-empire  language  earth  sky  agriculture  traces  paganism  linguistics 
september 2017 by nhaliday
Early History of Electricity and Magnetism
The ancient Greeks also knew about magnets. They noted that on rare occasions "lodestones" were found in nature, chunks of iron-rich ore with the puzzling ability to attract iron. Some were discovered near the city of Magnesia (now in Turkey), and from there the words "magnetism" and "magnet" entered the language. The ancient Chinese discovered lodestones independently, and in addition found that after a piece of steel was "touched to a lodestone" it became a magnet itself.'


One signpost of the new era was the book "De Magnete" (Latin for "On the Magnet") published in London in 1600 by William Gilbert, a prominent medical doctor and (after 1601) personal physician to Queen Elizabeth I. Gilbert's great interest was in magnets and the strange directional properties of the compass needle, always pointing close to north-south. He correctly traced the reason to the globe of the Earth being itself a giant magnet, and demonstrated his explanation by moving a small compass over the surface of a lodestone trimmed to a sphere (or supplemented to spherical shape by iron attachments?)--a scale model he named "terrella" or "little Earth," on which he was able to duplicate all the directional properties of the compass. (here and here)
nibble  org:edu  org:junk  lecture-notes  history  iron-age  mediterranean  the-classics  physics  electromag  science  the-trenches  the-great-west-whale  discovery  medieval  earth 
september 2017 by nhaliday
Lecture 14: When's that meteor arriving
- Meteors as a random process
- Limiting approximations
- Derivation of the Exponential distribution
- Derivation of the Poisson distribution
- A "Poisson process"
nibble  org:junk  org:edu  exposition  lecture-notes  physics  mechanics  space  earth  probability  stats  distribution  stochastic-processes  closure  additive  limits  approximation  tidbits  acm  binomial  multiplicative 
september 2017 by nhaliday
Why is Earth's gravity stronger at the poles? - Physics Stack Exchange
The point is that if we approximate Earth with an oblate ellipsoid, then the surface of Earth is an equipotential surface,11 see e.g. this Phys.SE post.

Now, because the polar radius is smaller than the equatorial radius, the density of equipotential surfaces at the poles must be bigger than at the equator.

Or equivalently, the field strength22 gg at the poles must be bigger than at the equator.
nibble  q-n-a  overflow  physics  mechanics  gravity  earth  space  intricacy  explanation  tidbits  spatial  direction  nitty-gritty  geography 
september 2017 by nhaliday
Does your weight change between the poles and the equator? (Intermediate) - Curious About Astronomy? Ask an Astronomer
You are right, that because of centrifugal force you will weigh a tiny amount less at the Equator than at the poles. Try not to think of centrifugal force as a force though; what's really going on is that objects which are in motion like to go in a straight line and so it takes some force to make them go round in a circle. (Centrifugal force is a fictitious force that shows up in the equations of motion for an object in a rotating reference frame - such as on Earth's Equator.)

So some of the force of gravity (centripetal force) is being used to make you go around in a circle at the Equator (instead of flying off into space) while at the pole this is not needed. The centripetal acceleration at the Equator is given by four times pi squared times the radius of the Earth divided by the period of rotation squared (4×π2×R/T2). Earth's period of rotation is a sidereal day (86164.1 seconds, slightly less than 24 hours), and the equatorial radius of the Earth is about 6378 km. This means that the centripetal acceleration at the Equator is about 0.03 m/s2 (metres per second squared). Compare this to the acceleration due to gravity which is about 9.8 m/s2 and you can see how tiny an effect this is - you would weigh about 0.3% less at the equator than at the poles!

There is an additional effect due to the oblateness of the Earth. The Earth is not exactly spherical but rather is a little bit like a "squashed" sphere (technically, an oblate spheroid), with the radius at the Equator slightly larger than the radius at the poles. (This shape can be explained by the effect of centrifugal acceleration on the material that makes up the Earth, exactly as described above.) This has the effect of slightly increasing your weight at the poles (since you are close to the centre of the Earth and the gravitational force depends on distance) and slightly decreasing it at the equator.

Taking into account both of the above effects, the gravitational acceleration is 9.78 m/s2 at the equator and 9.83 m/s2 at the poles, so you weigh about 0.5% more at the poles than at the equator.
nibble  q-n-a  org:edu  popsci  physics  mechanics  gravity  direction  absolute-relative  homo-hetero  earth  space  data  spatial  org:junk  marginal  explanation  geography 
september 2017 by nhaliday
Historically significant lunar eclipses - Wikipedia
On 30 June 1503, Christopher Columbus beached his two last caravels and was stranded in Jamaica. The indigenous people of the island welcomed Columbus and his crew and fed them, but Columbus' sailors cheated and stole from the natives. After six months, the natives halted the food supply.[8]

Columbus had on board an almanac authored by Regiomontanus of astronomical tables covering the years 1475–1506; upon consulting the book, he noticed the date and the time of an upcoming lunar eclipse. He was able to use this information to his advantage. He requested a meeting for that day with the Cacique, the leader, and told him that his god was angry with the local people's treatment of Columbus and his men. Columbus said his god would provide a clear sign of his displeasure by making the rising full Moon appear "inflamed with wrath".

The lunar eclipse and the red moon appeared on schedule, and the indigenous people were impressed and frightened. The son of Columbus, Ferdinand, wrote that the people:

“ with great howling and lamentation came running from every direction to the ships laden with provisions, praying to the Admiral to intercede with his god on their behalf... ”
Columbus timed the eclipse with his hourglass, and shortly before the totality ended after 48 minutes, he told the frightened indigenous people that they were going to be forgiven.[8] When the moon started to reappear from the shadow of the Earth, he told them that his god had pardoned them.[9]
history  age-of-discovery  medieval  early-modern  europe  the-great-west-whale  conquest-empire  civilization  farmers-and-foragers  stories  cocktail  trivia  big-peeps  impro  persuasion  dark-arts  wiki  reference  space  nibble  leadership  sky  earth  cycles  navigation  street-fighting  calculation 
august 2017 by nhaliday
How & Why Solar Eclipses Happen | Solar Eclipse Across America - August 21, 2017
Cosmic Coincidence
The Sun’s diameter is about 400 times that of the Moon. The Sun is also (on average) about 400 times farther away. As a result, the two bodies appear almost exactly the same angular size in the sky — about ½°, roughly half the width of your pinky finger seen at arm's length. This truly remarkable coincidence is what gives us total solar eclipses. If the Moon were slightly smaller or orbited a little farther away from Earth, it would never completely cover the solar disk. If the Moon were a little larger or orbited a bit closer to Earth, it would block much of the solar corona during totality, and eclipses wouldn’t be nearly as spectacular.

nibble  org:junk  org:edu  space  physics  mechanics  spatial  visuo  data  scale  measure  volo-avolo  earth  multi  news  org:mag  org:sci  popsci  sky  cycles  pro-rata  navigation  degrees-of-freedom 
august 2017 by nhaliday
Lecture 3: Global Energy Cycle
solar flux, albedo, greenhouse effect, energy balance, vertical distribution of energy, tilt and seasons
pdf  slides  nibble  physics  electromag  space  earth  sky  atmosphere  environment  temperature  stock-flow  data  magnitude  scale  phys-energy  distribution  oscillation  cycles  lectures  geography 
august 2017 by nhaliday
How large is the Sun compared to Earth? | Cool Cosmos
Compared to Earth, the Sun is enormous! It contains 99.86% of all of the mass of the entire Solar System. The Sun is 864,400 miles (1,391,000 kilometers) across. This is about 109 times the diameter of Earth. The Sun weighs about 333,000 times as much as Earth. It is so large that about 1,300,000 planet Earths can fit inside of it. Earth is about the size of an average sunspot!
nibble  org:junk  space  physics  mechanics  gravity  earth  navigation  data  objektbuch  scale  spatial  measure  org:edu  popsci  pro-rata 
august 2017 by nhaliday
The Earth-Moon system
nice way of expressing Kepler's law (scaled by AU, solar mass, year, etc.) among other things

nibble  org:junk  explanation  trivia  data  objektbuch  space  mechanics  spatial  visualization  earth  visual-understanding  navigation  experiment  measure  marginal  gravity  scale  physics  nitty-gritty  tidbits  identity  cycles  time  magnitude  street-fighting  calculation  oceans  pro-rata  rhythm  flux-stasis 
august 2017 by nhaliday
The Gulf Stream Myth
1. Fifty percent of the winter temperature difference across the North Atlantic is caused by the eastward atmospheric transport of heat released by the ocean that was absorbed and stored in the summer.
2. Fifty percent is caused by the stationary waves of the atmospheric flow.
3. The ocean heat transport contributes a small warming across the basin.

Is the Gulf Stream responsible for Europe’s mild winters?: http://ocp.ldeo.columbia.edu/res/div/ocp/gs/pubs/Seager_etal_QJ_2002.pdf
org:junk  environment  temperature  climate-change  usa  europe  comparison  hmm  regularizer  trivia  cocktail  error  oceans  chart  atmosphere  multi  pdf  study  earth  geography 
august 2017 by nhaliday
Proto-Indo-European society - Wikipedia
Linguistics has allowed the reliable reconstruction of a large number of words relating to kinship relations. These all agree in exhibiting a patriarchal, patrilocal and patrilineal social fabric. Patrilocality is confirmed by lexical evidence, including the word *h2u̯edh, "to lead (away)", being the word that denotes a male wedding a female (but not vice versa). It is also the dominant pattern in historical IE societies, and matrilocality would be unlikely in a patrilineal society.[1]

Inferences have been made for sacral kingship, suggesting the tribal chief at the same time assumed the role of high priest. Georges Dumézil suggested for Proto-Indo-European society a threefold division of a clerical class, a warrior class and a class of farmers or husbandmen, on his interpretations that many historically known groups speaking Indo-European languages show such a division, but Dumézil's approach has been widely criticised.[citation needed]

If there was a separate class of warriors, it probably consisted of single young men. They would have followed a separate warrior code unacceptable in the society outside their peer-group.[citation needed] Traces of initiation rites in several Indo-European societies (e.g. early Slav, Volcae, Neuri and their lupine ritualism) suggest that this group identified itself with wolves or dogs (see Berserker, Werewolf, Wild Hunt).

The people were organized in settlements (*weiḱs; Sanskrit viś, Polish wieś "village"; Ancient Greek woikos "home"; Latin vicus), probably each with its chief (*h₃rēǵs—Sanskrit rājan, Latin rex, reg-, Gaulish -riks). These settlements or villages were further divided in households (*domos; Latin domus, Polish dom), each headed by a patriarch (*dems-potis; Ancient Greek despotes, Sanskrit dampati, Polish pan domu).


Proto-Indo-European society depended on animal husbandry. People valued cattle (*péḱu – Vedic Sanskrit páśu, Latin pecu- *gʷōus – Sanskrit go, Latin bo-) as their most important animals, measuring a man's wealth by the number of cows he owned (Latin pecunia 'money' from pecus). Sheep (*h₃ówis) and goats (*gʰáidos) were also kept, presumably by the less wealthy. Agriculture and catching fish (*písḱos) also featured.[original research?]

The domestication of the horse (*h₁eḱuos – Vedic Sanskrit áśvas, Latin equus, Greek hippos) (see Tarpan) may have originated with these peoples: scholars sometimes invoke this as a factor contributing to their rapid expansion.

Trifunctional hypothesis: https://en.wikipedia.org/wiki/Trifunctional_hypothesis
The trifunctional hypothesis of prehistoric Proto-Indo-European society postulates a tripartite ideology ("idéologie tripartite") reflected in the existence of three classes or castes—priests, warriors, and commoners (farmers or tradesmen)—corresponding to the three functions of the sacral, the martial and the economic, respectively. The trifunctional thesis is primarily associated with the French mythographer Georges Dumézil,[1] who proposed it in 1929 in the book Flamen-Brahman,[2] and later in Mitra-Varuna.[3]


According to Dumézil (1898-1986), Proto-Indo-European society comprised three main groups corresponding to three distinct functions:[2][3]

- Sovereignty, which fell into two distinct and complementary sub-parts:
* one formal, juridical and priestly but worldly;
* the other powerful, unpredictable, and also priestly but rooted in the supernatural world.
- Military, connected with force, the military and war.
- Productivity, herding, farming and crafts; ruled by the other two.

The Trinity and the Indo-European Tripartite Worldview: http://www.jedp.com/trinity.html

Proto-Indo-European religion: https://en.wikipedia.org/wiki/Proto-Indo-European_religion
Various schools of thought exist regarding the precise nature of Proto-Indo-European religion, which do not always agree with each other. Vedic mythology, Roman mythology, and Norse mythology are the main mythologies normally used for comparative reconstruction, though they are often supplemented with supporting evidence from the Baltic, Celtic, Greek, Slavic, and Hittite traditions as well.

The Proto-Indo-European pantheon includes well-attested deities such as *Dyḗus Pḥatḗr, the god of the daylit skies, his daughter *Haéusōs, the goddess of the dawn, the Horse Twins, and the storm god *Perkwunos. Other probable deities include *Péh2usōn, a pastoral god, and *Seh2ul, a Sun goddess.

Well-attested myths of the Proto-Indo-Europeans include a myth involving a storm god who slays a multi-headed serpent that dwells in water, a myth about the Sun and Moon riding in chariots across the sky, and a creation story involving two brothers, one of whom sacrifices the other to create the world. The Proto-Indo-Europeans may have believed that the Otherworld was guarded by a watchdog and could only be reached by crossing a river. They also may have believed in a world tree, bearing fruit of immortality, either guarded by or gnawed on by a serpent or dragon, and tended by three goddesses who spun the thread of life.


The Functionalist School holds that Proto-Indo-European society and, consequently, their religion, was largely centered around the trifunctional system proposed by Georges Dumézil,[5] which holds that Proto-Indo-European society was divided into three distinct social classes: farmers, warriors, and priests.[5][6] The Structuralist School, by contrast, argues that Proto-Indo-European religion was largely centered around the concept of dualistic opposition.[7] This approach generally tends to focus on cultural universals within the realm of mythology, rather than the genetic origins of those myths,[7] but it also offers refinements of the Dumézilian trifunctional system by highlighting the oppositional elements present within each function, such as the creative and destructive elements both found within the role of the warrior.[7]


Another of the most important source mythologies for comparative research is Roman mythology.[8][10] Contrary to the frequent erroneous statement made by some authors that "Rome has no myth", the Romans possessed a very complex mythological system, parts of which have been preserved through the unique Roman tendency to rationalize their myths into historical accounts.[11] Despite its relatively late attestation, Norse mythology is still considered one of the three most important of the Indo-European mythologies for comparative research,[8] simply due to the vast bulk of surviving Icelandic material.[10]


The usual scheme is that one of these celestial deities is male and the other female, though the exact gender of the Sun or Moon tends to vary among subsequent Indo-European mythologies.[38] The original Indo-European solar deity appears to have been female,[38] a characteristic not only supported by the higher number of sun goddesses in subsequent derivations (feminine Sól, Saule, Sulis, Solntse—not directly attested as a goddess, but feminine in gender — Étaín, Grían, Aimend, Áine, and Catha versus masculine Helios, Surya, Savitr, Usil, and Sol) (Hvare-khshaeta is of neutral gender),[38] but also by vestiges in mythologies with male solar deities (Usil in Etruscan art is depicted occasionally as a goddess, while solar characteristics in Athena and Helen of Troy still remain in Greek mythology).[38] The original Indo-European lunar deity appears to have been masculine,[38] with feminine lunar deities like Selene, Minerva, and Luna being a development exclusive to the eastern Mediterranean. Even in these traditions, remnants of male lunar deities, like Menelaus, remain.[38]

Although the sun was personified as an independent, female deity, the Proto-Indo-Europeans also visualized the sun as the eye of *Dyḗus Pḥatḗr, as seen in various reflexes: Helios as the eye of Zeus,[39][40] Hvare-khshaeta as the eye of Ahura Mazda, and the sun as "God's eye" in Romanian folklore.[41] The names of Celtic sun goddesses like Sulis and Grian may also allude to this association; the words for "eye" and "sun" are switched in these languages, hence the name of the goddesses.[42][38]
history  antiquity  sapiens  gavisti  europe  mediterranean  india  asia  nordic  iron-age  the-classics  religion  myth  theos  roots  wiki  reference  culture  archaeology  janus  multi  nature  class  society  war  martial  military  farmers-and-foragers  agriculture  law  leviathan  the-founding  sky  earth  oceans  fluid  morality  ethics  formal-values  good-evil  mystic  justice  deep-materialism  new-religion  n-factor  letters  subjective-objective  realness  truth  telos-atelos  flux-stasis  class-warfare  the-watchers  noble-lie  forms-instances  whole-partial-many  the-self  dennett  within-without  christianity  org:junk  number  polisci  institutions  ideology  linguistics  traces  paganism 
may 2017 by nhaliday
Geologic temperature record - Wikipedia
2100 projection is comparable to early Pliocene/late Miocene, which is before H. sapiens (still plenty of mammals tho)
climate-change  environment  temperature  history  antiquity  time  sequential  wiki  reference  data  visualization  objektbuch  prediction  complex-systems  let-me-see  earth  time-series 
april 2017 by nhaliday
There’s good eating on one of those | West Hunter
Recently, Y.-H. Percival Zhang and colleagues demonstrated a method of converting cellulose into starch and glucose. Zhang thinks that it can be scaled up into an effective industrial process, one that could produce a thousand calories of starch for less than a dollar from cellulosic waste. This would be a good thing. It’s not just that are 7 billion people – the problem is that we have hardly any food reserves (about 74 days at last report).

Prepare for Nuclear Winter: http://www.overcomingbias.com/2017/09/prepare-for-nuclear-winter.html
If a 1km asteroid were to hit the Earth, the dust it kicked up would block most sunlight over most of the world for 3 to 10 years. There’s only a one in a million chance of that happening per year, however. Whew. However, there’s a ten times bigger chance that a super volcano, such as the one hiding under Yellowstone, might explode, for a similar result. And I’d put the chance of a full scale nuclear war at ten to one hundred times larger than that: one in ten thousand to one thousand per year. Over a century, that becomes a one to ten percent chance. Not whew; grimace instead.

There is a substantial chance that a full scale nuclear war would produce a nuclear winter, with a similar effect: sunlight is blocked for 3-10 years or more. Yes, there are good criticisms of the more extreme forecasts, but there’s still a big chance the sun gets blocked in a full scale nuclear war, and there’s even a substantial chance of the same result in a mere regional war, where only 100 nukes explode (the world now has 15,000 nukes).


Yeah, probably a few people live on, and so humanity doesn’t go extinct. But the only realistic chance most of us have of surviving in this scenario is to use our vast industrial and scientific abilities to make food. We actually know of many plausible ways to make more than enough food to feed everyone for ten years, even with no sunlight. And even if big chunks of the world economy are in shambles. But for that to work, we must preserve enough social order to make use of at least the core of key social institutions.


Nuclear War Survival Skills: http://oism.org/nwss/nwss.pdf
Updated and Expanded 1987 Edition

Nuclear winter: https://en.wikipedia.org/wiki/Nuclear_winter

Yellowstone supervolcano may blow sooner than thought — and could wipe out life on the planet: https://www.usatoday.com/story/news/nation/2017/10/12/yellowstone-supervolcano-may-blow-sooner-than-thought-could-wipe-out-life-planet/757337001/
west-hunter  discussion  study  commentary  bio  food  energy-resources  technology  risk  the-world-is-just-atoms  agriculture  wild-ideas  malthus  objektbuch  threat-modeling  scitariat  scale  biophysical-econ  allodium  nihil  prepping  ideas  dirty-hands  magnitude  multi  ratty  hanson  planning  nuclear  arms  deterrence  institutions  alt-inst  securities  markets  pdf  org:gov  white-paper  survival  time  earth  war  wiki  reference  environment  sky  news  org:lite  hmm  idk  org:biz  org:sci  simulation  maps  usa  geoengineering  insurance 
march 2017 by nhaliday
Diamond on domestication | West Hunter
Jared Diamond, in discussing animal domestication, claims that the local availability of species with the right qualities for domestication was key, rather than anything special about the biology or culture of the humans living there. In some cases that may be true: there aren’t many large mammals left in Australia, and they’re all marsupials anyway. Stupid marsupials. He claims that since Africans and Amerindians were happy to adopt Eurasian domesticated animals when they became available, it must be that that suitable local animals just didn’t exist. But that’s a non sequitur: making use of an already-domesticated species is not at all the same thing as the original act of domestication. That’s like equating using a cell phone with inventing one. He also says that people have had only mixed success in recent domestication attempts – but the big problem there is that a newly domesticated species doesn’t just have to be good, it has to be better than already-existing domestic animals.


In fact, in my mind the real question is not why various peoples didn’t domesticate animals that we know were domesticable, but rather how anyone ever managed to domesticate the aurochs. At least twice. Imagine a longhorn on roids: they were big and aggressive, favorites in the Roman arena.

Let me throw out an idea originated by an old friend, Ivy Smith. Consider mice, cats, and toxoplasma. Toxoplasma is a protozoan with a two stage life cycle: one in an intermediate host (mice and rats, among others) and a definitive host (some feline). Toxoplasma only reproduces sexually in the definitive host, and it ‘wants’ to end up there. It manipulates the behavior of the intermediate host in ways that increase the probability of transmission to the definitive host. For one thing, it makes mice like the smell of cat urine, which elicits fear in uninfected mice. In fact, it seems that toxoplasma-infected mice are sexually excited by cat urine. How weird – a parasite rechanneling sexual interest…

The idea is that at least some individual aurochs were not as hostile and fearful of humans as they ought to have been, because they were being manipulated by some parasite. The parasite might have caused a general reduction of fear or aggression without infecting or aiming at humans – or, maybe, humans really were the definitive host, and the parasite knew exactly what it was doing. The beef tape worm – which we originally acquired from lions or hyenas back in Africa a couple of million years ago – might have gained from making infected bovines quiet, passive, maybe even overly friendly in the presence of humans. This would have made domestication a hell of a lot easier.

Parenthetically, such host manipulation may play a really important ecological role. For all we know, if canids and felids had to rely purely on their own abilities, they’d starve.

The beef tape worm may not have made it through Beringia. More generally, there were probably no parasites in the Americas that had some large mammal as intermediate host and Amerindians as the traditional definite host. Amerindians simply hadn’t been there very long. Domesticating bison may have too hard for unaided humans, back in the day.

Every technique is in competition with rival techniques. This inhibits the development of new techniques, even if they have high potential in the long run. To succeed, they have to beat out existing techniques in the short run.

For example, there are potential advantages for superconducting electronics for computing, but CMOS keeps improving. It’s a moving target: it’s not enough to be good, or interesting, you have to be better. Soon, not in 50 years. This is particularly difficult considering the enormous amount of resources currently invested in improving semiconductor computing technology.

In the same way, one successful domestication tends to inhibit other domestications. Several crops were domesticated in the eastern United States, but with the advent of maize and beans, most were abandoned. Maybe if those Amerindians had continued to selectively breed sumpweed for a few thousand years, it would have been competitive: but nobody is that crazy. Pretty crazy, but not that crazy.

In Guns, Germs, and Steel, Jared Diamond argues that all human groups have equal mental capabilities – except for the inhabitants of New Guinea, who are clearly smarter than the human norm.

If this is the case, there’s money to be made. Good performance in a lot of high-paying jobs requires intelligence above some fairly high threshold. Such people are scarce [outside of New Guinea], and that means that their labor is expensive. The fraction of individuals above a high threshold increases dramatically with a higher mean, and since people in PNG don’t have high incomes, there is a fantastic arbitrage opportunity here. You could locate some of the many geniuses that must exist in PNG, rapidly and inexpensively teach them high-tech skills (which they would learn easily, since they’re geniuses, natch), apply for H1B visas, and them resell them to the highest Silicon Valley bidder. This wouldn’t last, of course – these guys would not stay peons forever. They’d be generating their own start-ups in a few years, founding hedge funds, dominating the Vegas poker tournaments, etc. Some, less materialistic, would become grandmasters, win Fields medals, or write seminal books about the attractions of cannibalism. Still, you could make a lot of money in the short run, and if you were careful to build good relationships with your employees, they might let you in on the ground floor of an IPO later.

Poul Anderson, always a visionary, foresaw this. A character in one his books put it thusly:” I am a racist – a dedicated, fanatical racist – who maintains, and can scientifically prove, that his own race is inferior. The only true humans on earth, my friends, the main line of evolution, the masters of the future, are the lordly Melanesians. ”

Of course that character was feigning insanity, but still.

PNG = Papua New Guinea

final review:
Guns, Germs, and Steel revisited: https://westhunt.wordpress.com/2017/09/04/guns-germs-and-steel-revisited/

He never says he was willing to wave the point, so how do you know that?

Next, europeans and Chinese ( northeast Asians) test smarter than anyone else. Noticeably so. And they act it, more or less. kinda sorta. More complicated mistakes.

lower genetic diversity in Amerindians+possibility that fast mutating viruses might adapt to their host and hit relatives harder
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november 2016 by nhaliday

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