nhaliday + h2o   61

Flows With Friction
To see how the no-slip condition arises, and how the no-slip condition and the fluid viscosity lead to frictional stresses, we can examine the conditions at a solid surface on a molecular scale. When a fluid is stationary, its molecules are in a constant state of motion with a random velocity v. For a gas, v is equal to the speed of sound. When a fluid is in motion, there is superimposed on this random velocity a mean velocity V, sometimes called the bulk velocity, which is the velocity at which fluid from one place to another. At the interface between the fluid and the surface, there exists an attraction between the molecules or atoms that make up the fluid and those that make up the solid. This attractive force is strong enough to reduce the bulk velocity of the fluid to zero. So the bulk velocity of the fluid must change from whatever its value is far away from the wall to a value of zero at the wall (figure 7). This is called the no-slip condition.

The fluid property responsible for the no-slip condition and the development of the boundary layer is viscosity.
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september 2017 by nhaliday
diffusion - Surviving under water in air bubble - Physics Stack Exchange
I get d≈400md≈400m.

It's interesting to note that this is independent of pressure: I've neglected pressure dependence of DD and human resilience to carbon dioxide, and the maximum safe concentration of carbon dioxide is independent of pressure, just derived from measurements at STP.

Finally, a bubble this large will probably rapidly break up due to buoyancy and Plateau-Rayleigh instabilities.
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august 2017 by nhaliday
Diving bell - Wikipedia
The diving bell is one of the earliest types of equipment for underwater work and exploration.[2] Its use was first described by Aristotle in the 4th century BC: "...they enable the divers to respire equally well by letting down a cauldron, for this does not fill with water, but retains the air, for it is forced straight down into the water."[3] According to Roger Bacon, Alexander the Great explored the Mediterranean on the authority of Ethicus the astronomer. In 1535, Guglielmo de Lorena created and used what is considered to be the first modern diving bell.
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august 2017 by nhaliday
How important was colonial trade for the rise of Europe? | Economic Growth in History
The latter view became the orthodoxy among economists and economic historians after Patrick O’Brien’s 1982 paper, which in one of many of Patrick’s celebrated phrases, claims that “”the periphery vs peripheral” for Europe. He concludes the paper by writing:

“[G]rowth, stagnation, and decay everywhere in Western Europe can be explained mainly by reference to endogenous forces. … for the economic growth of the core, the periphery was peripheral.”

This is the view that remarkable scholars such as N. Crafts, Deirdre McCloskey, or Joel Mokyr repeat today (though Crafts would argue cotton imports would have mattered in a late stage, and my reading of Mokyr is that he has softened his earlier view from the 1980s a little, specifically in the book The Enlightened Economy.) Even recently, Brad deLong has classifyied O’Brien’s 1982 position as “air tight”.

Among economists and economic historians more on the economics side, I would say that O’Brien’s paper was only one of two strong hits against the “Worlds-System” and related schools of thoughts of the 1970s, the other hit being Solow’s earlier conclusion that TFP growth (usually interpreted as technology, though there’s more to it than that) has accounted for economic growth a great deal more than capital accumulation, which is what Hobsbawm and Wallerstein, in their neo-Marxist framework, emphasize.

A friend tonight, on the third world and the first world, and our relationships to the past: "They don't forget, and we don't remember."
imo the European Intifada is being fueled by anti-Europeanism & widely taught ideas like this one discussed - Europe stole its riches

The British Empire was cruel, rapacious and racist. But contrary to what Shashi Tharoor writes in An Era Of Darkness, the fault for India’s miseries lies upon itself.

Indeed, the anti-Tharoor argument is arguably closer to the truth, because the British tended to use the landlord system in places where landlords were already in place, and at times when the British were relatively weak and couldn’t afford to upset tradition. Only after they became confident in their power did the British start to bypass the landlord class and tax the cultivators directly. King’s College London historian Jon Wilson (2016) writes in India Conquered, “Wherever it was implemented, raiyatwar began as a form of military rule.” Thus the system that Tharoor implicitly promotes, and which is associated with higher agricultural productivity today, arose from the very same colonialism that he blames for so many of India’s current woes. History does not always tell the parables that we wish to hear.


India’s share of the world economy was large in the eighteenth century for one simple reason: when the entire world was poor, India had a large share of the world’s population. India’s share fell because with the coming of the Industrial Revolution, Europe and North America saw increases of income per capita to levels never before seen in all of human history. This unprecedented growth cannot be explained by Britain’s depredations against India. Britain was not importing steam engines from India.

The big story of the Great Divergence is not that India got poorer, but that other countries got much richer. Even at the peak of Mughal wealth in 1600, the best estimates of economic historians suggest that GDP per capita was 61% higher in Great Britain. By 1750–before the battle of Plassey and the British takeover–GDP per capita in Great Britain was more than twice what it was in India (Broadberry, Custodis, and Gupta 2015). The Great Divergence has long roots.

Tharoor seems blinded by the glittering jewels of the Maharajas and the Mughals. He writes with evident satisfaction that when in 1615 the first British ambassador presented himself to the court of Emperor Jehangir in Agra, “the Englishman was a supplicant at the feet of the world’s mightiest and most opulent monarch.” True; but the Emperor’s opulence was produced on the backs of millions of poor subjects. Writing at the same time and place, the Dutch merchant Francisco Pelsaert (1626) contrasted the “great superfluity and absolute power” of the rich with “the utter subjection and poverty of the common people–poverty so great and miserable that the life of the people can be depicted…only as the home of stark want and the dwelling-place of bitter woe.” Indian rulers were rich because the empire was large and inequality was extreme.

In pre-colonial India the rulers, both Mughal and Maratha, extracted _anywhere from one-third to one half of all gross agricultural output_ and most of what was extracted was spent on opulence and the armed forces, not on improving agricultural productivity (Raychaudhuri 1982).


The British were awful rulers but the history of India is a long story of awful rulers (just as it is for most countries). Indeed, by Maddison’s (2007) calculations _the British extracted less from the Indian economy than did the Mughal Dynasty_. The Mughals built their palaces in India while the British built most of their palaces in Britain, but that was little comfort to the Indian peasant who paid for both. The Kohinoor diamond that graces the cover of Inglorious Empire is a telling symbol. Yes, it was stolen by the British (who stole it from the Sikhs who stole it from the Afghanis who stole it from the Mughals who stole it from one of the kings of South India). But how many Indians would have been better off if this bauble had stayed in India? Perhaps one reason why more Indians didn’t take up arms against the British was that for most of them, British rule was a case of meet the new boss, same as the old boss.

more for effect on colonies: https://pinboard.in/u:nhaliday/b:4b0128372fe9

INDIA AND THE GREAT DIVERGENCE: AN ANGLO-INDIAN COMPARISON OF GDP PER CAPITA, 1600-1871: http://eh.net/eha/wp-content/uploads/2013/11/Guptaetal.pdf
This paper provides estimates of Indian GDP constructed from the output side for the pre-1871 period, and combines them with population estimates to track changes in living standards. Indian per capita GDP declined steadily during the seventeenth and eighteenth centuries before stabilising during the nineteenth century. As British living standards increased from the mid-seventeenth century, India fell increasingly behind. Whereas in 1600, Indian per capita GDP was over 60 per cent of the British level, by 1871 it had fallen to less than 15 per cent. As well as placing the origins of the Great Divergence firmly in the early modern period, the estimates suggest a relatively prosperous India at the height of the Mughal Empire, with living standards well above bare bones subsistence.

but some of the Asian wage data (especialy India) have laughably small samples (see Broadberry & Gupta)

How profitable was colonialism for various European powers?: https://www.reddit.com/r/AskHistorians/comments/p1q1q/how_profitable_was_colonialism_for_various/

How did Britain benefit from colonising India? What did colonial powers gain except for a sense of power?: https://www.quora.com/How-did-Britain-benefit-from-colonising-India-What-did-colonial-powers-gain-except-for-a-sense-of-power
The EIC period was mostly profitable, though it had recurring problems with its finances. The initial voyages from Surat in 1600s were hugely successful and brought profits as high as 200%. However, the competition from the Dutch East India Company started to drive down prices, at least for spices. Investing in EIC wasn’t always a sure shot way to gains - British investors who contributed to the second East India joint stock of 1.6 million pounds between 1617 and 1632 ended up losing money.


An alternate view is that the revenues of EIC were very small compared to the GDP of Britain, and hardly made an impact to the overall economy. For instance, the EIC Revenue in 1800 was 7.8m pounds while the British GDP in the same period was 343m pounds, and hence EIC revenue was only 2% of the overall GDP. (I got these figures from an individual blog and haven’t verified them).


The British Crown period - The territory of British India Provinces had expanded greatly and therefore the tax revenues had grown in proportion. The efficient taxation system paid its own administrative expenses as well as the cost of the large British Indian Army. British salaries were lucrative - the Viceroy received £25,000 a year, and Governors £10,000 for instance besides the lavish amenities in the form of subsidized housing, utilities, rest houses, etc.


Indian eminent intellectual, Dadabhai Naoroji wrote how the British systematically ensured the draining of Indian economy of its wealth and his theory is famously known as ‘Drain of Wealth’ theory. In his book 'Poverty' he estimated a 200–300 million pounds loss of revenue to Britain that is not returned.

At the same time, a fair bit of money did go back into India itself to support further colonial infrastructure. Note the explosion of infrastructure (Railway lines, 100+ Cantonment towns, 60+ Hill stations, Courthouses, Universities, Colleges, Irrigation Canals, Imperial capital of New Delhi) from 1857 onward till 1930s. Of course, these infrastructure projects were not due to any altruistic motive of the British. They were intended to make their India empire more secure, comfortable, efficient, and to display their grandeur. Huge sums of money were spent in the 3 Delhi Durbars conducted in this period.

So how profitable was the British Crown period? Probably not much. Instead bureaucracy, prestige, grandeur, comfort reigned supreme for the 70,000 odd British people in India.


There was a realization in Britain that colonies were not particularly economically beneficial to the home economy. … [more]
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june 2017 by nhaliday
Suspicious Banana on Twitter: ""platonic forms" seem more sinister when you realize that integers were reaching down into his head and giving him city planning advice https://t.co/4qaTdwOlry"
Plato mentions in his Laws that 5040 is a convenient number to use for dividing many things (including both the citizens and the land of a state) into lesser parts. He remarks that this number can be divided by all the (natural) numbers from 1 to 12 with the single exception of 11 (however, it is not the smallest number to have this property; 2520 is). He rectifies this "defect" by suggesting that two families could be subtracted from the citizen body to produce the number 5038, which is divisible by 11. Plato also took notice of the fact that 5040 can be divided by 12 twice over. Indeed, Plato's repeated insistence on the use of 5040 for various state purposes is so evident that it is written, "Plato, writing under Pythagorean influences, seems really to have supposed that the well-being of the city depended almost as much on the number 5040 as on justice and moderation."[1]

"Now for divine begettings there is a period comprehended by a perfect number, and for mortal by the first in which augmentations dominating and dominated when they have attained to three distances and four limits of the assimilating and the dissimilating, the waxing and the waning, render all things conversable and commensurable [546c] with one another, whereof a basal four-thirds wedded to the pempad yields two harmonies at the third augmentation, the one the product of equal factors taken one hundred times, the other of equal length one way but oblong,-one dimension of a hundred numbers determined by the rational diameters of the pempad lacking one in each case, or of the irrational lacking two; the other dimension of a hundred cubes of the triad. And this entire geometrical number is determinative of this thing, of better and inferior births."[3]

Shortly after Plato's time his meaning apparently did not cause puzzlement as Aristotle's casual remark attests.[6] Half a millennium later, however, it was an enigma for the Neoplatonists, who had a somewhat mystic penchant and wrote frequently about it, proposing geometrical and numerical interpretations. Next, for nearly a thousand years, Plato's texts disappeared and it is only in the Renaissance that the enigma briefly resurfaced. During the 19th century, when classical scholars restored original texts, the problem reappeared. Schleiermacher interrupted his edition of Plato for a decade while attempting to make sense of the paragraph. Victor Cousin inserted a note that it has to be skipped in his French translation of Plato's works. In the early 20th century, scholarly findings suggested a Babylonian origin for the topic.[7]


Socrates: Surely we agree nothing more virtuous than sacrificing each newborn infant while reciting the factors of 39,916,800?

Turgidas: Uh

different but interesting: https://aeon.co/essays/can-we-hope-to-understand-how-the-greeks-saw-their-world
Another explanation for the apparent oddness of Greek perception came from the eminent politician and Hellenist William Gladstone, who devoted a chapter of his Studies on Homer and the Homeric Age (1858) to ‘perceptions and use of colour’. He too noticed the vagueness of the green and blue designations in Homer, as well as the absence of words covering the centre of the ‘blue’ area. Where Gladstone differed was in taking as normative the Newtonian list of colours (red, orange, yellow, green, blue, indigo, violet). He interpreted the Greeks’ supposed linguistic poverty as deriving from an imperfect discrimination of prismatic colours. The visual organ of the ancients was still in its infancy, hence their strong sensitivity to light rather than hue, and the related inability to clearly distinguish one hue from another. This argument fit well with the post-Darwinian climate of the late 19th century, and came to be widely believed. Indeed, it prompted Nietzsche’s own judgment, and led to a series of investigations that sought to prove that the Greek chromatic categories do not fit in with modern taxonomies.

Today, no one thinks that there has been a stage in the history of humanity when some colours were ‘not yet’ being perceived. But thanks to our modern ‘anthropological gaze’ it is accepted that every culture has its own way of naming and categorising colours. This is not due to varying anatomical structures of the human eye, but to the fact that different ocular areas are stimulated, which triggers different emotional responses, all according to different cultural contexts.
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june 2017 by nhaliday
Global Warming: Who Loses—and Who Wins? - The Atlantic
Ideas: What is Wrong with Global Warming Anyway?: http://daviddfriedman.blogspot.com/2011/09/what-is-wrong-with-global-warming.html

No one ever says it, but in many ways global warming will be a good thing: http://www.telegraph.co.uk/news/2016/05/05/no-one-ever-says-it-but-in-many-ways-global-warming-will-be-a-go/
Our climate conversation is lopsided. There is ample room to suggest that climate change has caused this problem or that negative outcome, but any mention of positives is frowned upon. We have known for decades that increasing CO₂ and precipitation from global warming will make the world much greener – by the end of the century, it is likely that global biomass will have increased by forty percent.

The great nutrient collapse: http://www.politico.com/agenda/story/2017/09/13/food-nutrients-carbon-dioxide-000511
The atmosphere is literally changing the food we eat, for the worse. And almost nobody is paying attention.

Climate change makes poor countries poorer, widening global inequality, researchers say: https://edition.cnn.com/2019/04/22/economy/inequality-climate-change/index.html
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may 2017 by nhaliday
Rescuing drowning children: How to know when someone is in trouble in the water.
In 10 percent of drownings, adults are nearby but have no idea the victim is dying. Here’s what to look for.
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may 2017 by nhaliday
Crossing the Rubicon - Wikipedia
The idiom "Crossing the Rubicon" means to pass a point of no return, and refers to Julius Caesar's army's crossing of the Rubicon River (in the north of Italy) in 49 BC, which was considered an act of insurrection and treason. Julius Caesar may have uttered the famous phrase "alea iacta est"—the die is cast—as his army marched through the shallow river.
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may 2017 by nhaliday
Growing Collectivism: Irrigation, Group Conformity and Technological Divergence
This paper examines the origins of collectivist cultures that emphasize group conformity over individual autonomy. In line with the hypothesis that collaboration within groups in pre-industrial agriculture favored the emergence of collectivism, I find that societies whose ancestors jointly practiced irrigation agriculture have stronger collectivist norms today. The positive effect of irrigation on contemporary collectivism holds across countries, subnational districts within countries, and migrants. For causal identification, I instrument the historical adoption of irrigation by its geographic suitability. Furthermore, this paper establishes that, by favoring conformity, irrigation agriculture has contributed to the global divergence of technology. I document (i) a negative effect of traditional irrigation agriculture on contemporary innovativeness of countries, cities, and migrants; (ii) a positive effect on selection into routine-intensive occupations; and (iii) that the initial technological advantage of irrigation societies was reversed after 1500.

This kind of investigation is always going to be fraught with uncertainty and also controversy, given imperfections of data and methods. Nonetheless I find this one of the more plausible macro-historical hypotheses, perhaps because of my own experience in central Mexico, where varying rainfall still is the most important economic event of the year, though it is rapidly being supplanted by the variability of tourist demand for arts and crafts. And yes, they are largely collectivist, at least at the clan level, with extensive systems of informal social insurance and very high implicit social marginal tax rates on accumulated wealth.

Have you noticed it rains a lot in England?


in-depth reflection on agricultural ecologies, Europe vs China, and internal Chinese differences/ethnic identity/relations with barbarians/nomads, etc.: https://www.gnxp.com/blog/2008/08/wealth-of-communities.php

Irrigation and Autocracy: http://www.econ.ku.dk/bentzen/Irrigation_and_Autocracy.pdf

Emerging evidence of cultural differences linked to rice versus wheat agriculture: https://sci-hub.tw/https://www.sciencedirect.com/science/article/pii/S2352250X1930082X
- Historical rice farming linked to interdependent culture.
- Differences tested in China and Japan, as well as in worldwide comparison.
- There is evidence for differences among urbanites with no direct experience farming.
- Rice farming is also linked to holistic thought, fewer patents for inventions.
- Rice cultures are not ‘pro-social’ but rather tight ties, strong division of close versus distant ties.

The agricultural roots of Chinese innovation performance: https://sci-hub.tw/https://www.sciencedirect.com/science/article/pii/S0014292119300893
We provide robust evidence that counties with a legacy of rice cultivation generate fewer patent applications than other counties, and a legacy of wheat production tends to be associated with more patent applications. The results for rice are robust to, e.g., controlling for temperature, precipitation, irrigation, disease burden, religiosity, and corruption, as well as accounting for migration patterns.

Steve Hsu on this stuff:
Genetic variation in Han Chinese population: http://infoproc.blogspot.com/2017/07/genetic-variation-in-han-chinese.html
Largest component of genetic variation is a N-S cline (phenotypic N-S gradient discussed here). Variance accounted for by second (E-W) PC vector is much smaller and the Han population is fairly homogeneous in genetic terms: ...while we revealed East-to-West structure among the Han Chinese, the signal is relatively weak and very little structure is discernible beyond the second PC (p.24).

Neandertal ancestry does not vary significantly across provinces, consistent with admixture prior to the dispersal of modern Han Chinese.

My fellow officers informed me, that while the negotiation was going on, the ships were constantly crowded with all kinds of refreshments, and that when they were first boarded by the Chinese they received every attention from them that could be shown; and that the presents received by the different officers belonging to the embassy, were of immense value. That the natives of this part of China were of different complexions and manners from those in and near Canton; their colour being nearly white; and in their manners were much more free and candid; and that they were of a larger stature, and more athletic than the southern Chinese—they were much more sociable, and not so particular respecting their women being seen by the men. And were even fond of receiving the officers into their houses, when on shore, provided it could be done without the knowledge of the mandarins.

The study below discusses a psychological/cognitive/personality gradient between N and S China, possibly driven by a history of wheat vs rice cultivation.


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may 2017 by nhaliday
Anonymous Mugwump: The Empirics of Free Speech and Realistic Idealism: Part II
1. News Media: Murdoch and the Purple Land
2. The Effects of Money and Lobbying in Politics
3. Video Games: Crash Bandicoot Shouting Fire in a Crowded Theatre
4. Porn: Having an Orgasm in a Crowded Theatre
5. Sexist Speech: Crash Bandicoot Making Rape Jokes in a Crowded Theatre
6. Race Related Speech: Hollywood, Skokie and Umugandas in Rwanda
7. Incitement, Obedience and Speech Act Theory: Eichmann to Jihadi Twitter
8. Conclusion: Epistemic Humility


Here is what I am seeking to show in the next few paragraphs:
1. Corporate ownership of the media does not lead to corporate-friendly media output arising from a conflict of interest.
2. The main driver of media output is consumer demand (i.e., people read what they already agree with) as the above extract indicates.
3. This could create a new negative effect of a free media: people living in a bubble where their views are reinforced by an uninformative partisan press.
4. I do not believe this bubble exists: reputational effects and consumer demand for truth rather than reinforcement of existing beliefs means that the partisan media does not, uniformly or consistently, distort the truth.


For clarity: my primary argument is that things like campaign contributions and lobbying don’t matter. But, in deference to how mixed the literature is, I would say that our aversion to interest groups is misguided. Whether it’s Save the Children campaigning for minimum levels of aid or Citigroup lobbying for certain legislation, we needn’t jump to accusations of corruption or cronyism. Democratic politics is about legislators listening, being persuaded in a marketplace of ideas – and it really doesn’t matter if the person putting forward that idea is Exxon Mobil or a constituent. The burden for suggesting that there is impropriety is necessarily high and I simply haven’t seen any convincing evidence that there is necessarily or mostly a link between money, lobbying, politics and impropriety.


[some stuff on video games, porn, sexism, and racial hate speech]

[this is pretty crazy:]
In essence, ‘learning from the peasant ideology… and the everyday propaganda during umuganda had also motivated people to see their fellow ba-Tutsi as enemies’ in the run up the genocide. When the genocide finally hit, umugandas were used more directly in the genocide:

During the genocide, umuganda did not involve planting trees but ‘clearing out the weeds’ – a phrase used by the genocidaires to mean the killing of Tutsis. Chopping up men was referred to as ‘bush clearing’ and slaughtering women and children as ‘pulling out the roots of the bad weeds’... The slogan, ‘clearing bushes and removing bad weeds’, were familiar terms used in the course of ordinary agricultural labour undertaken in umuganda.


One more Saturday with rainfall above 10mm corresponds to a 0.41 percentage point reduction in the civilian participation rate. Those who wish to stop curtail certain forms of hate speech might very easily rely on studies like this. But there is an even better study which they can rely on in doing so: RTLM was the radio station in Rwanda and much like the umugandas: referring to Tutsis as cockroaches and dirty.

Bowling for Fascism: Social Capital and the Rise of the Nazi Party: http://www.nber.org/papers/w19201
Towns with one standard deviation higher association density saw at least 15% faster Nazi Party entry. All types of societies – from veteran associations to animal breeders, chess clubs and choirs – positively predict NS Party entry.

White, middle-class social capital helps to incarcerate African-Americans in racially diverse states.: http://blogs.lse.ac.uk/usappblog/2017/09/22/white-middle-class-social-capital-helps-to-incarcerate-african-americans-in-racially-diverse-states/
Social capital is mostly seen as a ‘good’: bringing communities together and, in the case of criminal justice, encouraging social empathy which can lead to less harsh sentencing. But these analyses ignore racial divisions in social capital. In new research, Daniel Hawes finds that while social capital can reduce the Black-White disparity in incarceration rates in states with few African Americans, in states with greater numbers of African Americans, perceptions of racial threat can activate social capital in white communities, leading to greater targeting, profiling and arrests for minorities.
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april 2017 by nhaliday
Posterity Environmentalism – spottedtoad
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april 2017 by nhaliday
Human adaptation to arsenic in Andean populations of the Atacama Desert - Apata - 2017 - American Journal of Physical Anthropology - Wiley Online Library
The higher frequency of protective variants in both northern Chilean populations indicates a long exposure to naturally arsenic-contaminated water sources. Our data suggest that a high arsenic metabolization capacity has been selected as an adaptive mechanism in these populations in order to survive in an arsenic-laden environment.
study  sapiens  evolution  recent-selection  h2o  safety  cool  🌞  embodied  fluid 
february 2017 by nhaliday
Energy of Seawater Desalination
0.66 kcal / liter is the minimum energy required to desalination of one liter of seawater, regardless of the technology applied to the process.
infrastructure  explanation  physics  thermo  objektbuch  data  lower-bounds  chemistry  the-world-is-just-atoms  geoengineering  phys-energy  nibble  oceans  h2o  applications  estimate  🔬  energy-resources  biophysical-econ  stylized-facts  ideas  fluid  volo-avolo 
february 2017 by nhaliday
Bisphenol A (BPA)
Alternatives to BPA containers not easy for U.S. foodmakers to find: http://www.washingtonpost.com/wp-dyn/content/article/2010/02/22/AR2010022204830.html

Food is main source of BPA for consumers, thermal paper also potentially significant: https://www.efsa.europa.eu/en/press/news/130725
New data resulting from an EFSA call for data led to a considerable refinement of exposure estimates compared to 2006. For infants and toddlers (aged 6 months-3 years) average exposure from the diet is estimated to amount to 375 nanograms per kilogram of body weight per day (ng/kg bw/day) whereas for the population above 18 years of age (including women of child-bearing age) the figure is up to 132 ng/kg bw/day. By comparison, these estimates are less than 1% of the current Tolerable Daily Intake (TDI) for BPA (0.05 milligrams/kg bw/day) established by EFSA in 2006.

For all population groups above three years of age thermal paper was the second most important source of BPA after the diet (potentially accounting for up to 15% of total exposure in some population groups).

Among other key findings, scientists found dietary exposure to BPA to be the highest among children aged three to ten (explainable by their higher food consumption on a body weight basis). Canned food and non-canned meat and meat products were identified as major contributors to dietary BPA exposure for all age groups.

Tips for Avoiding BPA in Canned Food: http://www.breastcancerfund.org/reduce-your-risk/tips/avoid-bpa.html

Holding Thermal Receipt Paper and Eating Food after Using Hand Sanitizer Results in High Serum Bioactive and Urine Total Levels of Bisphenol A (BPA): http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0110509

Bisphenol S Disrupts Estradiol-Induced Nongenomic Signaling in a Rat Pituitary Cell Line: Effects on Cell Functions: http://ehp.niehs.nih.gov/1205826/
common substitute for BPA


Effect of probiotics, Bifidobacterium breve and Lactobacillus casei, on bisphenol A exposure in rats: https://www.ncbi.nlm.nih.gov/pubmed/18540113

What are the sources of exposure to eight frequently used phthalic acid esters in Europeans?: https://www.ncbi.nlm.nih.gov/pubmed/16834635
Food is a main source of DiBP, DnBP, and DEHP in consumers. In this case, consumers have very few possibilities to effectively reduce their exposure.

Are endocrine disrupting compounds a health risk in drinking water?: https://www.ncbi.nlm.nih.gov/pubmed/16823090

How to Avoid Phthalates (Even Though You Can't Avoid Phthalates): http://www.huffingtonpost.com/maia-james/phthalates-health_b_2464248.html
data  org:gov  hypochondria  endocrine  embodied-street-fighting  public-health  news  org:rec  business  tradeoffs  food  multi  study  summary  diet  top-n  org:euro  org:health  nitty-gritty  human-bean  checklists  cooking  embodied  human-study  science-anxiety  sanctity-degradation  intervention  epidemiology  bio  🐸  model-organism  list  health  hmm  idk  parasites-microbiome  street-fighting  evidence-based  objektbuch  embodied-pack  chart  roots  h2o  advice  org:lite  biodet  fluid  left-wing 
january 2017 by nhaliday
Flood myth - Wikipedia, the free encyclopedia
Adrienne Mayor promoted the hypothesis that global flood stories were inspired by ancient observations of seashells and fish fossils in inland and mountain areas. The ancient Greeks, Egyptians, and Romans all documented the discovery of such remains in these locations; the Greeks hypothesized that Earth had been covered by water on several occasions, citing the seashells and fish fossils found on mountain tops as evidence of this history.
history  anthropology  wiki  religion  cocktail  concept  myth  hmm  narrative  roots  h2o  theos  archaeology  fluid  traces 
july 2016 by nhaliday
How Old Are Fairy Tales? - The Atlantic
Many folklorists disagreed. Some have claimed that many classic fairy tales are recent inventions that followed the advent of mass-printed literature. Others noted that human stories, unlike human genes, aren't just passed down vertically through generations, but horizontally within generations. “They’re passed across societies through trade, exchange, migration, and conquest,” says Tehrani. “The consensus was that these processes would have destroyed any deep signatures of descent from ancient ancestral populations.”

Not so. Tehrani and da Silva found that although neighboring cultures can easily exchange stories, they also often reject the tales of their neighbors. Several stories were less likely to appear in one population if they were told within an adjacent one.

Meanwhile, a quarter of the Tales of Magic showed clear signatures of shared descent from ancient ancestors. “Most people would assume that folktales are rapidly changing and easily exchanged between social groups,” says Simon Greenhill from the Australian National University. “But this shows that many tales are actually surprisingly stable over time and seem to track population history well.” Similarly, a recent study found that flood “myths” among Aboriginal Australians can be traced back to real sea level rises 7,000 years ago.

Many of the Tales of Magic were similarly ancient, as the Grimms suggested. Beauty and the Beast and Rumpelstiltskin were first written down in the 17th and 18th centuries respectively, but they are actually between 2,500 and 6,000 years old—not quite tales as old as time, but perhaps as old as wheels and writing.

The Smith and the Devil is probably 6,000 years old, too. In this story, a crafty blacksmith sells his soul to an evil supernatural entity in exchange for awesome smithing powers, which he then uses to leash the entity to an immovable object. The basic tale has been adapted in everything from Faust to blues lore, but the most ancient version, involving the blacksmith, comes from the Bronze Age! It predates the last common ancestor of all Indo-European languages. “It's constantly being updated and recycled, but it's older than Christianity,” says Tehrani.

This result might help to settle a debate about the origins of Indo-European languages. It rules out the idea that these tongues originated among Neolithic farmers, who lived 9,000 years ago in what is now modern Turkey. After all, how could these people, who hadn’t invented metallurgy, have concocted a story where the hero is a blacksmith? A rival hypothesis becomes far more likely: Indo-European languages emerged 5,000 to 6,000 years ago among pastoralists from the Russian steppes, who knew how to work metal.

The Smith and the Devil: https://en.wikipedia.org/wiki/The_Smith_and_the_Devil
The Smith and the Devil is a European fairy tale. The story is of a smith who makes a pact with a malevolent being—commonly the Devil (in later times), Death or a genie—selling his soul for some power, then tricks the devil out of his prize. In one version, the smith gains the power to weld any materials, then uses this power to stick the devil to an immovable object, allowing the smith to renege on the bargain.[1]


According to George Monbiot, the blacksmith is a motif of folklore throughout (and beyond) Europe associated with malevolence (the medieval vision of Hell may draw upon the image the smith at his forge), and several variant tales tell of smiths entering into a pact with the devil to obtain fire and the means of smelting metal.[6]

According to research applying phylogenetic techniques to linguistics by folklorist Sara Graça da Silva and anthropologist Jamie Tehrani,[7] "The Smith and the Devil" may be one of the oldest European folk tales, with the basic plot stable throughout the Indo-European speaking world from India to Scandinavia, possibly being first told in Indo-European 6,000 years ago in the Bronze Age.[1][8][9] Folklorist John Lindow, however, notes that a word for "smith" may not have existed in Indo-European, and if so the tale may not be that old.[9]

Revealed: how Indigenous Australian storytelling accurately records sea level rises 7,000 years ago: http://www.theguardian.com/australia-news/2015/sep/16/indigenous-australian-storytelling-records-sea-level-rises-over-millenia


I wonder how long oral history lasts. What’s the oldest legend that has some clear fragment of truth in it?

The Black Sea deluge hypothesis, being the origin of the different deluge myths around the Middle East?
People have lived in river valleys for a long time now, and they flood. I mean, deluge myths could also go back to the end of the Ice Age, when many lands went underwater as sea level rose. But how can you tell? Now if there was a one-time thing that had a special identifying trait, say purple rain, that might be convincing.

RE: untangling actual historical events and personages from myth and legend,

Obviously, it’s pretty damn tough. In most cases (THE ILIAD, the Pentateuch, etc), we simply lack the proper controls (literary sources written down at a time reasonably close to the events in question). Hence, we have to rely on a combination of archaeology plus intuition.Was a city sacked at roughly the proper time? Does a given individual appear to be based on a real person?

I’m partial to the notion that the “forbidden fruit” was wheat, making the Garden of Eden a story about the dawn of agriculture, and the story of Cain and Abel the first conflict between settled farmer and semi-nomadic pastoralist. That would make it perhaps 6 millennia old when first written down.
The story of Cain and Abel is indeed the conflict between the agricultural and pastoral ways of life

same conclusion as me: https://pinboard.in/u:nhaliday/b:9130f5f3c17b

great blog: https://biblicalsausage.wordpress.com/

Euhemerus (also spelled Euemeros or Evemerus; Ancient Greek: Εὐήμερος Euhēmeros, "happy; prosperous"; late fourth century BC), was a Greek mythographer at the court of Cassander, the king of Macedon. Euhemerus' birthplace is disputed, with Messina in Sicily as the most probable location, while others suggest Chios or Tegea.[citation needed]

The philosophy attributed to and named for Euhemerus, euhemerism, holds that many mythological tales can be attributed to historical persons and events, the accounts of which have become altered and exaggerated over time.

Euhemerus's work combined elements of fiction and political utopianism. In the ancient world he was considered an atheist. Early Christian writers, such as Lactantius, used Euhemerus's belief that the ancient gods were originally human to confirm their inferiority regarding the Christian God.

In the ancient skeptic philosophical tradition of Theodorus of Cyrene and the Cyrenaics, Euhemerus forged a new method of interpretation for the contemporary religious beliefs. Though his work is lost, the reputation of Euhemerus was that he believed that much of Greek mythology could be interpreted as natural or historical events subsequently given supernatural characteristics through retelling. Subsequently Euhemerus was considered to be an atheist by his opponents, most notably Callimachus.[7]


Euhemerus' views were rooted in the deification of men, usually kings, into gods through apotheosis. In numerous cultures, kings were exalted or venerated into the status of divine beings and worshipped after their death, or sometimes even while they ruled. Dion, the tyrant ruler of Syracuse, was deified while he was alive and modern scholars consider his apotheosis to have influenced Euhemerus' views on the origin of all gods.[8] Euhemerus was also living during the contemporaneous deification of the Seleucids and "pharaoization" of the Ptolemies in a fusion of Hellenic and Egyptian traditions.


Hostile to paganism, the early Christians, such as the Church Fathers, embraced euhemerism in attempt to undermine the validity of pagan gods.[13] The usefulness of euhemerist views to early Christian apologists may be summed up in Clement of Alexandria's triumphant cry in Cohortatio ad gentes: "Those to whom you bow were once men like yourselves."[14]

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january 2016 by nhaliday

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