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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 
10 weeks ago by nhaliday
lineinfile - Manage lines in text files — Ansible Documentation
The difference between this module and the search and replace module is that the Line in File Module can be used to check the existence of text as well as to replace text, but it only works well for single line replacements. For multi-line replacements use the search and replace module instead.
documentation  ansible  guide  reference  lineinfile  module  edit  lines  in  text  files  update  change  replace  regex  regular  expression  howto  example  tutorial  check  existence 
july 2018 by racl101
Welcome To Siddha Performance - Siddha Performance
Human beings have been told a great truth. But with a terrible omission.

They have been told that the mind is the most powerful tool in the world.

But what they have not been told is that in order to Use this tool, they must first become separate from it.

The mind stands as a veil between man and his true life.

It stands as a barrier between man and his otherworldly capabilities.

And this is precisely because man lives enslaved to the mind. As such, man has become a tool for the mind.

This one truth is the source of ALL of man’s miseries, distractions, vices, habits, conflicts, and mediocrities.

Once we learn what the mind fundamentally is, we learn to distance ourself from it. And in doing so, we gain instant CLARITY.


The world is awash in “instructions” and “prescriptions.” I have no use for such things.

For if you tell a man “how” to do something, he will forever be subservient to the How. And never to The Thing.

“Instruction” does not create knowledge. It creates dependency.


And the holy grail of human existence, human performance, and human perfection: The State of No-Mind.
no-mind  atmamun  nomind  mind  holy  grail  why  exist  human  existence  performance  state  living  god  perfect  perfection  pinnacle  truth  nba  kiv  siddha  kapil  gupta  man  clarity  tool  powerful  0 
june 2018 by bekishore
This cartoon explains why Elon Musk thinks we’re characters in a computer simulation. He might be right. - Vox
Elon Musk thinks it's almost certain that we are living in a computer simulation. In short, we are characters in an advanced version of The Sims — so advanced that it creates, well, us.
Archive  existence  ifttt  pinboard  universe 
june 2018 by leninworld
Surveil things, not people – The sideways view
Technology may reach a point where free use of one person’s share of humanity’s resources is enough to easily destroy the world. I think society needs to make significant changes to cope with that scenario.

Mass surveillance is a natural response, and sometimes people think of it as the only response. I find mass surveillance pretty unappealing, but I think we can capture almost all of the value by surveilling things rather than surveilling people. This approach avoids some of the worst problems of mass surveillance; while it still has unattractive features it’s my favorite option so far.


The idea
We’ll choose a set of artifacts to surveil and restrict. I’ll call these heavy technology and everything else light technology. Our goal is to restrict as few things as possible, but we want to make sure that someone can’t cause unacceptable destruction with only light technology. By default something is light technology if it can be easily acquired by an individual or small group in 2017, and heavy technology otherwise (though we may need to make some exceptions, e.g. certain biological materials or equipment).

Heavy technology is subject to two rules:

1. You can’t use heavy technology in a way that is unacceptably destructive.
2. You can’t use heavy technology to undermine the machinery that enforces these two rules.

To enforce these rules, all heavy technology is under surveillance, and is situated such that it cannot be unilaterally used by any individual or small group. That is, individuals can own heavy technology, but they cannot have unmonitored physical access to that technology.


This proposal does give states a de facto monopoly on heavy technology, and would eventually make armed resistance totally impossible. But it’s already the case that states have a massive advantage in armed conflict, and it seems almost inevitable that progress in AI will make this advantage larger (and enable states to do much more with it). Realistically I’m not convinced this proposal makes things much worse than the default.

This proposal definitely expands regulators’ nominal authority and seems prone to abuses. But amongst candidates for handling a future with cheap and destructive dual-use technology, I feel this is the best of many bad options with respect to the potential for abuse.
ratty  acmtariat  clever-rats  risk  existence  futurism  technology  policy  alt-inst  proposal  government  intel  authoritarianism  orwellian  tricks  leviathan  security  civilization  ai  ai-control  arms  defense  cybernetics  institutions  law  unintended-consequences  civil-liberty  volo-avolo  power  constraint-satisfaction  alignment 
april 2018 by nhaliday
High male sexual investment as a driver of extinction in fossil ostracods | Nature
Sexual selection favours traits that confer advantages in the competition for mates. In many cases, such traits are costly to produce and maintain, because the costs help to enforce the honesty of these signals and cues1. Some evolutionary models predict that sexual selection also produces costs at the population level, which could limit the ability of populations to adapt to changing conditions and thus increase the risk of extinction2,3,4.
study  org:nat  bio  evolution  selection  sex  competition  cost-benefit  unintended-consequences  signaling  existence  gender  gender-diff  empirical  branches  rot  modernity  fertility  intervention  explanans  humility  status  matching  ranking  ratty  hanson 
april 2018 by nhaliday
The Tail End
Very powerful post showing giving an alternative viewpoint on how much time we have left of our life by showing life in events rather than years.

"I read about five books a year, so even though it feels like I’ll read an endless number of books in the future, I actually have to choose only 300 of all the books out there to read and accept that I’ll sign off for eternity without knowing what goes on in all the rest."
death  longevity  life  existence 
november 2017 by cd
Centers of gravity in non-uniform fields - Wikipedia
In physics, a center of gravity of a material body is a point that may be used for a summary description of gravitational interactions. In a uniform gravitational field, the center of mass serves as the center of gravity. This is a very good approximation for smaller bodies near the surface of Earth, so there is no practical need to distinguish "center of gravity" from "center of mass" in most applications, such as engineering and medicine.

In a non-uniform field, gravitational effects such as potential energy, force, and torque can no longer be calculated using the center of mass alone. In particular, a non-uniform gravitational field can produce a torque on an object, even about an axis through the center of mass. The center of gravity seeks to explain this effect. Formally, a center of gravity is an application point of the resultant gravitational force on the body. Such a point may not exist, and if it exists, it is not unique. One can further define a unique center of gravity by approximating the field as either parallel or spherically symmetric.

The concept of a center of gravity as distinct from the center of mass is rarely used in applications, even in celestial mechanics, where non-uniform fields are important. Since the center of gravity depends on the external field, its motion is harder to determine than the motion of the center of mass. The common method to deal with gravitational torques is a field theory.
nibble  wiki  reference  physics  mechanics  intricacy  atoms  expectancy  spatial  direction  ground-up  concept  existence  uniqueness  homo-hetero  gravity  gotchas 
september 2017 by nhaliday
Get You Have To Try This Marinade ! It Really Is The Best Marinade In Existence !… Ideas HD | Best Images Collections HD For Gadget windows Mac Android
You have to try out this Marinade ! It seriously is the Greatest Marinade in Existence !… You have to try out this Marinade ! It seriously is the Greatest Marinade in Existence ! You have to try out this Marinade ! It seriously is the Greatest Marinade in Existence !…
IFTTT  WordPress  Barbecue  Existence  hd  ideas  marinade 
august 2017 by wotek
Teju Cole (@_tejucole) • Fotos y vídeos de Instagram
"Is it he or is it I that experience this?
Is it I then that keep saying there is an hour
Filled with expressible bliss, in which I have
No need, am happy, forget need's golden hand,
Am satisfied without solacing majesty,
And if there is an hour there is a day,
There is a month, a year, there is a time
In which majesty is a mirror of the self:
I have not but I am and as I am, I am.
—Wallace Stevens
from "Notes Toward A Supreme Fiction""
wallacestevens  poetry  poems  fiction  tejucole  photography  experience  being  existence  self 
august 2017 by robertogreco

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