natural theology

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vol VII: Notes

2015

Notes

[Sunday 30 August 2015 - Saturday 5 September 2015]

[Notebook: DB 79: Galileo Wins]

[page 50]

Sunday 30 August 2015

Pitch: On distinguishing true salvation from false salvation. (On Visible Salvation).

Salvation is a widespread notion in theological and religious tradition. It ay be achieving an eternity of bliss with the divinity after death, or it may simply mean having a peaceful and prosperous life. The opposite of salvation, damnation, may take the form of an eternity of excruciating pain in Hell to the failure or get the chosen lolly.

Traditionally religions offer the means of salvation. At one end of the spectrum we have purely spiritual means like prayer and fasting, and at the other engineering operations like building sewers or an effective government information processing system.

Here we look at salvation from the perspective of survival.

Trapped by the binding of unfulfilled desire..

We may think of a Turing machine as an algorithm, or as an instance of an algorithm addressed by a particular input or (as in the universal Turing machine) an algorithm for loading an algorithm to be executed in multiple instances.

Each algorithm is a symmetry or metric binding output to input.

Opportet distinguere [one should distinguish] holds for the world as well as for its intellectuals, and the goals of the intellectuals should (?) be to

[page 51]

track the world.

Universals are real, we call them symmetry, and they trace the history of the establishment of fixed points in the system.

We are looking for self sustaining (self reproducing) systems, those capable of attracting the nutrients for growth.

Monday 31 August 2015

A network has to furnish both privacy and publicity. private protocols use encryption to prevent intercepted messages from being deciphered. The number of possible encryptions is so great that everyone can have their own, a one-to-one correspondence. Publicity, on the other hand, requires plain language deigned to give some message maximum impact, ie maximum audience of people likely to do something, like sort their rubbish. Messages must be encoded in a way that couples to our 'psychology'.

Gravitation, content free messages, no addressing. These features are added onto the flow of four-momentum that is provided by the space-time in which we exist.

Gravitation is expressed as continuous differential equations that represent the average occurrences (probabilities) of various events The events themselves, as in quantum mechanics, are discrete like the reception of a particle.

Maybe the particles of gravitation are Higgs bosons (spinless bosons).

Speciation: subdivision of protocols.

[page 53]

Field: algorithm written in space-time, ie a computation (like multiplication).

Gravitation: mtaphysics, the integral heuristic structure of being Gravitation / energy. The conservation of energy is achieved by closed flows of energy through leakproof pipes, ie pipes that conserve probability, normalize the Universe. Prime matter = clock.

Tuesday 1 September 2015

God = initial singularity = initial symmetry.

Evolution of fixed points breaks symmetries. Each layer not only breaks the symmetries of the layer beneath it but creates new symmetries to be exploited by the layer above it and so on.

Let us guess that gravitation introduced one dimensional space and breaks the symmetry of time from simply a sequence of identical events to an ordered sequence of before and after made possible by the existence of memory.

Borders are artificial creations. Charter of human right guarantees us all access to everywhere provided only we are not impairing the rights of others [entering their private space uninvited?].

Complexification - symmetry breaking.

2D space-time can accommodate spin [the singlet state?].

Political evil entered the world when Moses went up the mountain, spoke to God and came back down telling everybody

[page 54]

that he spoke with the authority of God and would kill anyone who disputed his authority. He went on to slay many over the incident of the Golden Calf. Exodus 32

Spin is a symmetry, broken by various values ±½, ±1 etc. This links closely to computation as action, pysically embodied logic.

Symmetry and universals Symmetry - Wikipedia, Problem of universals - Wikipedia

Gauge invariance: the mathematics expresses symmetry, ie algorithm which gives a distinct answer for each set of input. F = m.a. m.a - constant gives us symmetry (indistinguishability) in force.

Ever since I first saw the Blues Brothers I have realized I am on a mission from God, The mission is to reveal the true God which has been hidden in plain sight by the spin doctors of Catholicism and the other major Christian religions. Dan Akroyd

Wednesday 2 September 2015

Layered network seems to provide natural explanation for law / symmetry / universals. This sort of thing bolsters my faith in the network model. I need this because the incredible complexity of the Standard Model defeats me. Nevertheless I have faith thay any computation of value in the standard model is computable, that is leds to a testable result. The network, limited in its power by the bounds on computability can manage this. What we are looking for are the algorithms that make the universe behave as it does. Taking a cue from Turing and recursive function theory, I am working on the idea that all computations can be realized by a suitable

[page 55]

switching among a space-time community of nand gates. Such a structure is capable of executing any computable function. Computability theory - Wikipedia, Sheffer stroke - Wikipedia

We embrace quantum information theory and accept it as the invisible explanation / computation of the universe. An algorithm is a symmetry coupling a set of inputs, say m and a, to yield a set of outputs we will call F. The machine computes F = ma This computation is verified if it is found to be consistent with measured values of F, M and a and we find this to be so in the space of Newtonian physics. Relativity requires that we redefine m. So a Turing machine as an algorithm is a symmetry, and a particular instance of that algorithm [is a fixed point in the symmetry]. Richard Feynman

The complexity of big programs is beyond comprehension if faced 'head on', but becomes manageable by breaking the overall process into orthogonal units which can communicate with one another to provide a system capable of meeting all the demands of the task to be automated.

So we begin with no-operation, then go to not, and and the other logical primitives. How are these represented, stored and brought into communication with one another?

passage of time — rotation of vector — complex multiplication
state at a moment — superposition of basis states — complex addition.

The game is to couple the recursive complexification of the universal network with the observed layers we see in the structure of the world.

We might say the foundation of mathematical theology

[page 56]

is mathematical metaphysics, which traces the evolution or development of mathematics from simple axiom systems like logic and set theory.

A mathematical statement owes its meaning to the milieu in which it exists, which is the mathematical community, extended in both space and time. History of mathematics. We begin with things with no actual meaning, a set of points and some axioms and build things upo from there, like Euclid. If we were a God deciding to have fixed points, (or being required by consistency to have fixed points) where would we start? History of Mathematics - Wikipedia

One requirement of the starting point is that it has a future. We are here because our starting point led to us, Some pople think this points to a very precise tuning of the initial state of the universe which must have been done by a creator outside the universe, Others think everything is possible that does not involve contradiction, since contradictions are dead ends beyond which progress must take a random jump for one option or another, From the point of view of the clock driving the world, the fundamental logical operation is not. There are an infinity of dualities that can model the connective not, male is not female, one is not two and so on: not = orthogonality, nothing in common, Movement north is independent of movement east

Two extremes: live completely for one-self; live completely for others. They are always superposed, as Adam Smith suggested, although controlling the hidden hand is important. Invisible hand - Wikipedia

Thursday 3 September 2015

We are seeking a union of heaven and earth that will

[page 57]

bring meaning to our earthly lives.

Catholicism: The symmetry that underlies global diversity. Entropy is maximized when we have symmetry because everything becomes equally possible, giving the culling (selection) process the maximum range to choose from and it will select for a finite number of species, fixed points in the genetic continuum. The weed makes the sentence appear brilliant, although it will fade into the background as I continue [almost weightlessly] along my generalized (transfinite) geodesic. Geodesic - Wikipedia

4-space describes the simplest symmetry for a physical computing machine: a clock and three dimensions of wiring, so there are no crossed wires and so confused signals. The diron again. [search site]

Symmetry breeds complexity by not-caring, not controlling, and the higher layers explore the complexity for stable species (forms).

Higher layers must curate lower layers to ensure their own survival, and so everybody has a vested interest in keeping space-time as a perfect abstract model of a communication system, giving orthogonal adresses / communication channels and a clock to synchronize everything, ie keep it in the correct phase relationships within the superposition. We look after the space that looks after us, or should so so.

Probability is conserved because action is conserved [conservation demands that every creation is mirrored by an annihilation ?].There are only so many acts to go around, and if one is happening others are not, so the probability of a source a emitting the letter ai, plus the probability of emitting some aj ≠ i is 1. Probability of p and [or] not-p is 1.

[page 58]

A fundamental error of Christianity is denial of death and a huge legend that has been constructed (The History of Salvation) to rationalize this denial.

God = unconscious = invisible process, the continuum that underlies the discrete observations which appear here as sentences and paragraphs. Although these notes are made at random, they have a certain coherence due to the arising from the same subconsious dynamism.

Friday 4 September

The Catholic business plan: bring its doctrine into conformity with science. The Catholic Church has been a resounding success, beginning in the first century ce with a few dozen workers, now become a global enterprise with as many clients as facebook. But it has fallen out of step with [many] of its potential users.

The written intellectual history of the Church begins with the prologue to the Gospel of John and continued to develop vigorously until the fourth century when it became the official religion of the Roman Empire and codified its beliefs. Much of this work was done against a background of Platonic metaphysics, which maintains that real reality is outside this world.

The next big development in theology, metaphysics and science coincided with the beginnings of the university system and the assimilation of Aristotle into Medieval Europe.The result was the work of Saint Thomas, whose writings remain (officially) central top Catholic theology (canon 252). Aquinas produced his synthesis by merging Catholic dogma and

[page 59]

Aristotelian metaphysics. In particular, Aristotle produced the notion of potency and act, and used it to argue for the existence of a first unmoved mover. This argument was taken over to the letter in Thomas' first proof for the existence of God, which remains a tacit foundation for the Catholic Faith. Code of Canon Law: 252

One may see Bernard Lonergan as the Aristotle of the twentieth century trying to move Aristotle and Thomas' ideas from the physical to the psychological world. In his book Insight he interprets the Scholastic potency and act as the ability to understand and actual understanding, indicated by the act of insight. Instead of motion in space we have motion in mind. Lonergan then goes on to use this idea to argue for the existence of a transcendental world beyond human ken, the traditional Catholic position. Although Aristotle probably thought the first mover is part of the universal system, Catholic theology places God outside the World. Lonergan: Insight: A Study of Human Understanding

This position has never received universal assent and its position is significantly weakened by the development of quantum information theory. Lonergan was right: reality is psychological, where by psychological we mean an information processing system. He was wrong, however, to consider the universe as a puppet of a transcendental power. The transfinite psychology of the universe is sufficient to embrace our traditional notions of God. Richard P. Feynman: Simulating Physics with Computers

It seems that the intelligentsia have deprecated the material world since time immemorial This may be an attempt by the wealthy to demarcate themselves from the poor, the peasants, the miners and the tradespeople who did dirty jobs. So Aristotle and Thomas both thought of matter as potential, something that required an existing actuality to bring it into being. Now we know that matter is alive, the source of action, in fact performing all the roles of the creator.

[page 60]

A source can only emit one letter at a time, in a serial stream. Nevertheless is draws from a 'parallel' [or 'superposed'] set of letters, its alphabet, choosing letters at random or according to some algorithm or set of algorithms that give meaning to the serial stream and maybe influence its probability structure [with maximum entropy coding, probability structure will remain flat = random].

Two features of the world revealed by quantum information theory explain its divine power. First, quantum operations have the computing power of a universal turing machine, the mathematical upper limit of computability. Second, memory in quantum computation is described by state vectors in Hilbert spaces of finite or infinite dimension, This formal universe has infinite memory. Like God, there is nothing doable it cannot do.

. . .

Bring green religion back into politics.

Negotiation: opposed forces seeking an equipotential surface (symmetry) within which they can communicate (no crossed wires).

Quantum observation is formally identical to insight, differing only in complexity.

We transfer the analytical notion of limit into the network world through the notion of recursion. As we approach zero by recursive selection of epsilons and deltas in analysis, so we approach the concrete world by recursively adding layers of complexity as we localize our abstract theories.

[page 61]

This work is beginning to feel more like a job to me and less like an impossible fantasy. It now seems possible so see a realistic goal to be achieved by the psychological and theological approach to the universe, most generally the cybernetic approach, based on the fact that control is possible in some maps of human space.

. . .

Neuenschwander page xi: 'As perhaps the central organizing principle of postintroductory physics, Noether's theorem deserves to be more widely known among physics students . . . This book attempts to fulfill that need. Neuenschwander

Morrison, N page 1: 'For Leibniz, symmetry is related to the indiscernability of differences.

N, page 3: 'Rotating [a cylinder] and not being able to tell that it has been rotated captures the sssence of what we mean here by symmetry.'

page 4: 'The existence of invariance reveals an underlying symmetry.

'' "Invariant" means that a quantity's numerical value is not altered by a coordinate transformation. "Conserved", in contrast, means that within a given coordinate system the quantity does not change throughout a process. . . . Noether's theorem relates conservation to invariance and thus to symmetry.

'. . . what invariant quantities lead us to conservation laws? . . . These quantities are called functionals. In the functional we have a powerful concept that puts almost all of physics into a common language. Everything

[page 62]

wonderful I am going to relate here comes through these functionals.'

Neuenschwander page 5: Functional = definite integral.

page 15: 'Generally a "functional" is a mapping from a well defined set of functions to the real numbers.'

Saturday 5 September

Wikipedia: Noether's theorem. 'Euler-Lagrange d/dt (∂L/∂q̇k) = ∂L/∂q.

Thus if one of the coordinates , say qk, does not appear in the Lagrangian, the right hand side of the equation is zero and the left hand side requires that d/dt (∂L/∂q̇k) = d pk /dt = 0, where the momentum pk = ∂L/∂q̇k is conserved through the motion.

The absence of the ignorable coordinate qk from the Lagrangian implies that the Lagrangian is unaffected by changes or transformations of qk; the Lagrangian is invariant and is said to exhibit symmetry under such transformations. This is the seed idea generalized in Noether's theorem'. Noether's theorem - Wikipedia

How do we carry Noether's results in infinite dimensional continuous manifolds to the transfinite computer network? Maybe because in the 'digital to the core' approach, conservation of action is guaranteed by the 'collapse of the wavefunction', ie all the continuous discussion

[page 63]

boils down to a series of quantum events, each measured by the quantum of action, the same quantum of action, in effect, flowing along the whole sequence of atomic events in the computation, finally appearing observably at the end of the invisible computation or flow. In quantum mechanics the collapse of the ψ is understood to be a discontinuous event at the conclusion of a continuous and invisible process. Here, however, we see the whole process as stepwise, and the observation a step is no different than any of the others, it just happens to be observed. In general we claim that action is conserved by the treelike splitting of large events into small ones [differentiation] and the inverse process (integration) of seeing a sequence of small events as one larger event, all of whose cardinals are the number of quanta of action involved in the event (set) we are considering.

We express space as a function of time: ∫t dt = ½t2. Tick of time to tick of space.

Functional is a mapping from a set of functions (instances of an algorithm) to the real numbers. An algorithm may have a stationary point, at which small changes in the input make minimal change to the output, ie it must be nonlinear.

Extremal: most efficient algorithm / least efficient algorithm.

Least efficient algorithm works simply with beans, and no position significant notation, ie identical particles, no ordering.

Space-time gives addresses (distinguishability) to otherwise indistinguishable (symmetric) particles. So all identical humans can be named by giving them an address, which may be a spacetime structure or may be simply a serial number (1D parameter), or even a symbol which itself has no natural order.

[page 64]

The fact that in gravitation one maximizes rather than minimizes the action sugests that gravitation works in bean counter mode with no meaning or ordering.

Neuenschwander page 37: 'Hamilton's principle and Newton's second law are equivalent—but only for classical mechanics.

I am in a sea of complexity, like the woodheap at Ferrers St, slowly sorting and assembling the pieces of wood to make a wall, as one makes walls with random pieces of stone.

N page 43: 'The world line of a freely falling particle would be that for which the elapsed proper time between two events was maximized, making the world line a geodesic in space-time.

Hamilton's principle selects for extremal algorithms, either the most or the least efficient. N page 47.

page 47: Why K - U? a) equipartition K = U
page 48; b) Proper time from A to B maximized.

page 61: Speed of light is frame independent so length and time become frame dependent.

page 61: 'Consider tranformations decribed by a continuous parameter ε that can be varied starting from ε = 0. The identity transformation ε = 0 makes no change whatsoever. As ε increases from zero the diffference between the original and the new coordinate system becomes larger and larger. Noether's theorem deals only with continuous transformations.

page 52: Metric converts coordinate displacements to distances.

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Further reading

Books

Click on the "Amazon" link below each book entry to see details of a book (and possibly buy it!)

Christie, Agatha, A Carribean Mystery, Collins 1964 back
Coulson, Charles A, Valence, Oxford University Press 1985  
Amazon
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Dawkins, Richard, The God Delusion, Houghton Mifflin 2006 Amazon Editorial Review From Publishers Weekly 'The antireligion wars started by Daniel Dennett and Sam Harris will heat up even more with this salvo from celebrated Oxford biologist Dawkins. For a scientist who criticizes religion for its intolerance, Dawkins has written a surprisingly intolerant book, full of scorn for religion and those who believe. But Dawkins, who gave us the selfish gene, anticipates this criticism. He says it's the scientist and humanist in him that makes him hostile to religions—fundamentalist Christianity and Islam come in for the most opprobrium—that close people's minds to scientific truth, oppress women and abuse children psychologically with the notion of eternal damnation. While Dawkins can be witty, even confirmed atheists who agree with his advocacy of science and vigorous rationalism may have trouble stomaching some of the rhetoric: the biblical Yahweh is "psychotic," Aquinas's proofs of God's existence are "fatuous" and religion generally is "nonsense." The most effective chapters are those in which Dawkins calms down, for instance, drawing on evolution to disprove the ideas behind intelligent design. In other chapters, he attempts to construct a scientific scaffolding for atheism, such as using evolution again to rebut the notion that without God there can be no morality. He insists that religion is a divisive and oppressive force, but he is less convincing in arguing that the world would be better and more peaceful without it.' Copyright © Reed Business Information, a division of Reed Elsevier Inc. All rights reserved. 
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Jones, Alexander (ed), The Jerusalem Bible, Darton Longman and Todd 1966 Editor's Foreword: '. . . The Bible . . . is of its nature a written charter guaranteed (as Christians believe) by the Spirit of God, crystallised in antiquity, never to be changed . . . . This present volume is the English equivalent of [La Bible de Jerusalem] . . . an entirely faithful version of the ancient texts which, in doubntful points, preserves the text established and (for the most part) the interpretation adopted by the French scholars in the light of the most recent researches in the fields of history, archaeology and literary criticism.' (v-vi) 
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Kauffman, Stuart, At Home in the Universe: The Search for Laws of Complexity, Oxford University Press 1995 Preface: 'As I will argue in this book, natural selection is important, but it has not laboured alone to craft the fine architectures of the biosphere . . . The order of the biological world, I have come to believe . . . arises naturally and spontaneously because of the principles of self organisation - laws of complexity that we are just beginning to uncover and understand.'  
Amazon
  back
Klein, Richard G, The Human Career : Human Biological and Cultural Origins , University of Chicago Press 1999 Review: 'The Human Career describes one of the most spectacular changes to have occurred in our understanding of human evolution. The once-popular fresco showing a single file of marching hominids becoming ever more vertical, tall and hairless now appears to be a fiction. . . . For most of the past four million years several species of hominids coexisted, sometimes in limited geographical areas. The eventual peopling of the planet with a single homogeneous species of hominid is shown to be exceptional on the geological timescale. . . . If you could have only one book that deals with human evolution, this is definitely the one to choose. ' Jean-Jacques Hublins, Nature. 403:364 27 January 2000. 
Amazon
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Lonergan, Bernard J F, Insight : A Study of Human Understanding (Collected Works of Bernard Lonergan : Volume 3), University of Toronto Press 1992 '. . . Bernard Lonergan's masterwork. Its aim is nothing less than insight into insight itself, an understanding of understanding' 
Amazon
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Polanyi, Michael, and Amaryta Sen (foreword), The Tacit Dimension, University Of Chicago Press 2009 Amazon product description: '“I shall reconsider human knowledge by starting from the fact that we can know more than we can tell,” writes Michael Polanyi, whose work paved the way for the likes of Thomas Kuhn and Karl Popper. The Tacit Dimension argues that tacit knowledge—tradition, inherited practices, implied values, and prejudgments—is a crucial part of scientific knowledge. Back in print for a new generation of students and scholars, this volume challenges the assumption that skepticism, rather than established belief, lies at the heart of scientific discovery.' 
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Suzuki, Daisetz Teitaro, Studies in Zen, Rider and Co, for the Buddhist Society 1953 Studies in Zen is the eigth volume of the collected works of DT Suzuki. Jacket: 'These studies, packed with the jewels of Zen wisdom, and written with unrivalled knowledge, will appeal to all who seek a deeper understanding of Eastern ways of thought and spiritual achievement. For Zen is unique in the whole range of human understanding, and Dr. Suzuki is accepted as its greatest exponent. 
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Papers
Polanyi, Michael, "Life transcending physics and chemistry", Chemical and Engineering News, 45, 35, 21 August 1967, page 54-66. back
Links
Bible, Bible: King James Version, 'About the Bible, King James Version The original electronic text for this version of the Bible was provided by the Oxford Text Archive. Original tagging was performed by the New Centre for the Oxford English Dictionary (Waterloo). Subsequent conversion to SGML was performed by the University of Michigan Humanities Text Initiative. The HTI is grateful for the permission of the Oxford Text Archive to provide access to the text.' back
Cantor's theorem - Wikipedia, Cantor's theorem - Wikipedia, the free encyclopedia, 'In elementary set theory, Cantor's theorem states that, for any set A, the set of all subsets of A (the power set of A) has a strictly greater cardinality than A itself. For finite sets, Cantor's theorem can be seen to be true by a much simpler proof than that given below, since in addition to subsets of A with just one member, there are others as well, and since n < 2n for all natural numbers n. But the theorem is true of infinite sets as well. In particular, the power set of a countably infinite set is uncountably infinite. The theorem is named for German mathematician Georg Cantor, who first stated and proved it.' back
Charles Darwin - Wikipedia, Charles Darwin - Wikipedia, the free encyclopedia, 'Charles Robert Darwin FRS (12 February 1809 – 19 April 1882) was an English naturalist. He established that all species of life have descended over time from common ancestry, and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection.' back
Code of Canon Law 252, The formation of clerics, 'Can. 252 §1. Theological instruction is to be imparted in the light of faith and under the leadership of the magisterium in such a way that the students understand the entire Catholic doctrine grounded in divine revelation, gain nourishment for their own spiritual life, and are able properly to announce and safeguard it in the exercise of the ministry. §2. Students are to be instructed in sacred scripture with special diligence in such a way that they acquire a comprehensive view of the whole of sacred scripture. §3. There are to be classes in dogmatic theology, always grounded in the written word of God together with sacred tradition; through these, students are to learn to penetrate more intimately the mysteries of salvation, especially with St. Thomas as a teacher. There are also to be classes in moral and pastoral theology, canon law, liturgy, ecclesiastical history, and other auxiliary and special disciplines, according to the norm of the prescripts of the program of priestly formation.' back
Computability theory - Wikipedia, Computability theory - Wikipedia, the free encyclopedia, 'Computability theory, also called recursion theory, is a branch of mathematical logic that originated in the 1930s with the study of computable functions and Turing degrees. The field has grown to include the study of generalized computability and definability. In these areas, recursion theory overlaps with proof theory and effective descriptive set theory. The basic questions addressed by recursion theory are "What does it mean for a function from the natural numbers to themselves to be computable?" and "How can noncomputable functions be classified into a hierarchy based on their level of noncomputability?". The answers to these questions have led to a rich theory that is still being actively researched.' back
Dan Akroyd, The Blues Brothers, back
Eliza Berlage and James Whitmore, Global count shows tree numbers have haved since dawn of human civilization, 'Peter Kanowski, a forestry professor at Australian National University, said “all sorts of forests are valuable for all sorts of reasons, and we’re losing too much of them”. “The scale and rate of loss of biodiversity, carbon stock and other forest values, that has been at unprecedented rates for much of the past 50 years, is impacting profoundly and perhaps irreversibly on ecosystems, livelihoods, forest values and climate at scales from global to local,” he said.' back
Exodus 32, Exodus 32:27, '27 Then he said to them, “This is what the Lord, the God of Israel, says: ‘Each man strap a sword to his side. Go back and forth through the camp from one end to the other, each killing his brother and friend and neighbor.’” 28 The Levites did as Moses commanded, and that day about three thousand of the people died. 29 Then Moses said, “You have been set apart to the Lord today, for you were against your own sons and brothers, and he has blessed you this day.”' back
Fixed point theorem - Wikipedia, Fixed point theorem - Wikipedia, the free encyclopedia, 'In mathematics, a fixed point theorem is a result saying that a function F will have at least one fixed point (a point x for which F(x) = x), under some conditions on F that can be stated in general terms. Results of this kind are amongst the most generally useful in mathematics. The Banach fixed point theorem gives a general criterion guaranteeing that, if it is satisfied, the procedure of iterating a function yields a fixed point. By contrast, the Brouwer fixed point theorem is a non-constructive result: it says that any continuous function from the closed unit ball in n-dimensional Euclidean space to itself must have a fixed point, but it doesn't describe how to find the fixed point (See also Sperner's lemma).' back
Geodesic - Wikipedia, Geodesic - Wikipedia, the free encyclopedia, 'In mathematics, particularly differential geometry, a geodesic . . . is a generalization of the notion of a "straight line" to "curved spaces". In the presence of a Riemannian metric, geodesics are defined to be (locally) the shortest path between points in the space. In the presence of an affine connection, geodesics are defined to be curves whose tangent vectors remain parallel if they are transported along it. The term "geodesic" comes from geodesy, the science of measuring the size and shape of Earth; in the original sense, a geodesic was the shortest route between two points on the Earth's surface, namely, a segment of a great circle. The term has been generalized to include measurements in much more general mathematical spaces; for example, in graph theory, one might consider a geodesic between two vertices/nodes of a graph. Geodesics are of particular importance in general relativity, as they describe the motion of inertial test particles.' back
Gregory Cowles, Oliver Sacks dies at 82; Neurologist and Author Explored the Brain's Quirks, 'In 1989, interviewing him for “The MacNeil/Lehrer NewsHour,” Joanna Simon asked Dr. Sacks how he would like to be remembered in 100 years. “I would like it to be thought that I had listened carefully to what patients and others have told me,” he said, “that I’ve tried to imagine what it was like for them, and that I tried to convey this. “And, to use a biblical term,” he added, “bore witness.” ' back
History of Mathematics - Wikipedia, History of Mathematics - Wikipedia, the free encyclopedia, 'The area of study known as the history of mathematics is primarily an investigation into the origin of discoveries in mathematics and, to a lesser extent, an investigation into the mathematical methods and notation of the past. Before the modern age and the worldwide spread of knowledge, written examples of new mathematical developments have come to light only in a few locales. The most ancient mathematical texts available are Plimpton 322 (Babylonian mathematics c. 1900 BC),[2] the Rhind Mathematical Papyrus (Egyptian mathematics c. 2000-1800 BC)[3] and the Moscow Mathematical Papyrus (Egyptian mathematics c. 1890 BC). All of these texts concern the so-called Pythagorean theorem, which seems to be the most ancient and widespread mathematical development after basic arithmetic and geometry.' back
Invisible hand - Wikipedia, Invisible hand - Wikipedia, the free encyclopedia, 'In economics, the invisible hand is a metaphor used by Adam Smith to describe unintended social benefits resulting from individual actions. The phrase is employed by Smith with respect to income distribution (1759) and production (1776). The exact phrase is used just three times in Smith's writings, but has come to capture his notion that individuals' efforts to pursue their own interest may frequently benefit society more than if their actions were directly intending to benefit society.' back
Jack Waterford, Border Force fiasco calls into question culture andleadership in 'paramilitary' group, 'The Border Force Fiasco is much more than last Friday. It can be seen through a thousand prisms. As a study of leadership, accountability and responsibility. As yet another example of the Abbott government's haplessness, hopelessness and current incapacity to win a trick. About whether it is actually smart to stir up public anxieties about aliens, strangers and terrorists. About whether the ABF contains the sort of people to whom we ought to give guns, and, implicitly, the right to use them. About whether it has the checks and balances necessary whenever people are vested with power over the lives of others. back
Jason Wilson, Twitter tyrants and social justice warriors beware! The libertarians are coming for you, 'It’s almost as if the values the cultural libertarians articulate aren’t intended to be applied universally at all. They just seem to want free speech for themselves and their mates.' back
John Maynard, Capturing the lived history of the Aborigines Protection Board while we still can, '2015 marks 100 years since amendments to the NSW Aborigines Protection Act gave the board far-reaching powers with consequences that are felt to this day. The 1915 amendments gave the board complete power to remove Aboriginal children from their families. They also enabled the acceleration of the revocation of Aboriginal reserves and the casting off of Aboriginal families from largely independent and successful farms around the state. For many Aboriginal people of those times, this was a board not of protection, but persecution. The board utterly controlled the lives and affairs of Aboriginal people in NSW from 1883 until 1969.' back
Meditations on First Philosophy - Wikipedia, Meditations on First Philosophy - Wikipedia, the free encyclopedia, 'Meditations on First Philosophy (subtitled In which the existence of God and the immortality of the soul are demonstrated) is a philosophical treatise written by René Descartes first published in Latin in 1641. . . . The book is made up of six meditations, in which Descartes first discards all belief in things which are not absolutely certain, and then tries to establish what can be known for sure.' back
New York Times Editorial, Australia's Brutal Treatment of Migrants, 'Prime Minister Tony Abbott has overseen a ruthlessly effective effort to stop boats packed with migrants, many of them refugees, from reaching Australia’s shores. His policies have been inhumane, of dubious legality and strikingly at odds with the country’s tradition of welcoming people fleeing persecution and war.' back
P versus NP problem - Wikipedia, P versus NP problem - Wikipedia, the free encyclopedia, 'The P versus NP problem is a major unsolved problem in computer science. Informally, it asks whether every problem whose solution can be quickly verified by a computer can also be quickly solved by a computer. It was introduced in 1971 by Stephen Cook in his seminal paper "The complexity of theorem proving procedures" and is considered by many to be the most important open problem in the field. It is one of the seven Millennium Prize Problems selected by the Clay Mathematics Institute to carry a US$1,000,000 prize for the first correct solution.' back
Peter Hannam, Australia's carbon emissionsextend rebound, led by coal fired power, 'Greenhouse gas emissions from Australia's main sources of energy use jumped by almost 10 million tonnes in the first year after the end of the carbon price, making it harder for the Abbott government to meet its goals of reducing carbon pollution. Total annualised carbon emissions in the 2014-15 financial year from the National Electricity Market (NEM) supplying about 80 per cent of the Australian consumers, all petroleum products consumed nationally and natural gas use in south-east Australia, rose by 9.6 million tonnes, or 3.3 per cent, consultancy Pitt & Sherry said. The contribution from the NEM alone rose by 6.4 million tonnes in the year as brown and black coal use in the power sector jumped, while transport-sourced emissions rose 1.8 million tonnes, and gas for use other than in electricity generation added 1.4 million tonnes, the firm's latest Cedex report found. back
Problem of universals - Wikipedia, Problem of universals - Wikipedia, the free encyclopedia, 'The problem of universals is an ancient problem in metaphysics about whether universals exist. Universals are general or abstract qualities, characteristics, properties, kinds or relations, such as being male/female, solid/liquid/gas or a certain colour[1], that can be predicated of individuals or particulars or that individuals or particulars can be regarded as sharing or participating in. . . . The problem of universals is about their status; as to whether universals exist independently of the individuals of whom they can be predicated or if they are merely convenient ways of talking about and finding similarity among particular things that are radically different. This has led philosophers to raise questions like, if they exist, do they exist in the individuals or only in people's minds or in some separate metaphysical domain?' back
Quantum simulator - Wikipedia, Quantum simulator - Wikipedia, the free encyclopedia, 'Quantum simulators permit the study of quantum systems that are difficult to study in the laboratory and impossible to model with a supercomputer. In this instance, simulators are special purpose devices designed to provide insight about specific physics problems. A universal quantum simulator is a quantum computer proposed by Richard Feynman in 1982. Feynman showed that a classical Turing machine would experience an exponential slowdown when simulating quantum phenomena, while his hypothetical universal quantum simulator would not. David Deutsch in 1985, took the ideas further and described a universal quantum computer. In 1996, Seth Lloyd showed that a standard quantum computer can be programmed to simulate any local quantum system efficiently' back
Quantum Turing machine - Wikipedia, Quantum Turing machine - Wikipedia, the free encyclopedia, 'A quantum Turing machine (QTM), also a universal quantum computer, is an abstract machine used to model the effect of a quantum computer. It provides a very simple model which captures all of the power of quantum computation. Any quantum algorithm can be expressed formally as a particular quantum Turing machine. Such Turing machines were first proposed in a 1985 paper written by Oxford University physicist David Deutsch suggesting quantum gates could function in a similar fashion to traditional digital computing binary logic gates' back
Richard P. Feynman, Simulating Physics with Computers, 'I want to talk about the possibility that there is to be an exact simulation, that the computer will do exactly the same as nature. If this is to be proved and the type of computer is as I've already explained, then it's going to be necessary that everything that happens in a finite volume of space and time would have to be exactly analyzable with a finite number of logical operations. The present theory of physics is not that way, apparently. It allows space to go down into infinitesimal distances, wavelengths to get infinitely great, terms to be summed in infinite order, and so forth; and therefore, if this proposition is right, physical law is wrong. back
Sheffer stroke - Wikipedia, Sheffer stroke - Wikipedia, the fre encyclopedia, 'The Sheffer stroke, written "|" or "?", in the subject matter of boolean functions or propositional calculus, denotes a logical operation that is equivalent to the negation of the conjunction operation, expressed in ordinary language as "not both". It is also called the alternative denial, since it says in effect that at least one of its operands is false. In Boolean algebra and digital electronics it is known as the NAND operation ("not and").' back
Spencer Ackerman, West Point professor calls on US military to target legal critics of war on terror, 'An assistant professor in the law department of the US Military Academy at West Point has argued that legal scholars critical of the war on terrorism represent a “treasonous” fifth column that should be attacked as enemy combatants. In a lengthy academic paper, the professor, William C Bradford, proposes to threaten “Islamic holy sites” as part of a war against undifferentiated Islamic radicalism. That war ought to be prosecuted vigorously, he wrote, “even if it means great destruction, innumerable enemy casualties, and civilian collateral damage”.' back
Thomas L Friedman, Our Radical Islamic BFF, Saudi ArBIA, ' "“The last few decades have seen this attempt to homogenize Islam,” claiming “there is only one legitimate path to God,” Haqqani said. And when there is only one legitimate path, “all others are open to being killed. That has been the single most dangerous idea that has emerged in the Muslim world, and it came out of Saudi Arabia and has been embraced by others, including the government in Pakistan.” ' back
Thomas Robert Malthus - Wikipedia, Thomas Robert Malthus - Wikipedia, the free encyclopedia, 'The Reverend Thomas Robert Malthus FRS (February 1766 – December 1834) was an English scholar, influential in political economy and demography. Malthus popularized the economic theory of rent. Malthus has become widely known for his theories about population and its increase or decrease in response to various factors. The six editions of his An Essay on the Principle of Population, published from 1798 to 1826, observed that sooner or later population gets checked by famine and disease. ' back
Tom Heenan, Seventy years after Hiroshima, who was Australian wae correspondent Wilfred Burchertt?, 'Burchett wrote stories that the Australian and US governments preferred not to be told and paid the price. He covered wars in which Australians fought on the other side. He was not “a my country right or wrong” barracker, but reported the facts as he saw them, and for the most part got them right. His career should be judged on all his achievements and not reduced to a solitary story.' back
Walid Aly, Dyson Heydon: the pub test is a tool in the politics of cynicism, 'This isn't a mere question of semantics. Let's be clear about this: when Bandt or Oliver appeal to pub sensibilities to suggest it is some obvious howler that Heydon would hear an application against himself, they are in fact attacking the normal operation of the legal system. In making his judgment, Heydon was acting as countless judges have for countless years. As you read this right now, there's a fair chance a judge somewhere in Australia is doing the same in a very important case involving lots of money or the fate of some children after a divorce.' back

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