Has cosmic fine-tuning been refuted?


Is the universe fine-tuned for intelligent life? In 2016, astrophysicist Geraint Lewis and cosmologist Luke Barnes, both at the University of Sydney, Australia, waded into this perplexing and controversial arena in a new book entitled A Fortunate Universe: Life in a Finely Tuned Cosmos [Lewis2016]. The core of the Lewis-Barnes book and an accompanying technical paper by Luke Barnes [Barnes2012] is their review of the “cosmic coincidences”:

Carbon resonance and the strong force. If the strong force were slightly stronger or slightly weaker (by just 1% in either direction), there would be no carbon or any heavier elements anywhere

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Pinker’s “Enlightenment Now”: Humanism and scientific progress


Many have read books and articles by renowned Harvard social scientist Steven Pinker. In his 2011 book The Better Angels of Our Nature: Why Violence Has Declined, Pinker cited a huge amount of historical and sociological data to conclude, counter-intuitively to many, that violence has declined “at the scale of millennia, centuries, decades, and years”, “over several orders of magnitude of violence, from genocide to war to rioting to homicide to the treatment of children and animals.”

Pinker pointed out, for example, that while WWI and WWII had the most wartime fatalities in history, when normalized by world

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Do probability arguments refute evolution?


Both traditional creationists and intelligent design writers have invoked probability arguments in criticisms of biological evolution. They argue that certain features of biology are so fantastically improbable that they could never have been produced by a purely natural, “random” process, even assuming the billions of years of history asserted by geologists and astronomers. They often equate the hypothesis of evolution to the absurd suggestion that monkeys randomly typing at a typewriter could compose a selection from the works of Shakepeare, or that an explosion in an aerospace equipment yard could produce a working 747 airliner [Dembski1998; Foster1991; Hoyle1981;

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Evolutionary computing and artificial intelligence

Courtesy Ahmed Medhat Othman

Evolutionary computing

Evolution has been studied mathematically since the early 1900s, with works by D’Arcy Thompson, Ronald Fisher and others. Among other things, these analyses quantified estimates of how many generations of a given species would be required to achieve a certain level of observed change. With the rise of computer technology in the 1960s, computational simulations were devised to study evolution.

From here is was a relatively straightforward step to apply these same evolution-mimicking simulations to other applications as well, an approach originally termed genetic algorithms. In a typical application, potential engineering design parameters

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The future of artificial intelligence: Utopia or dystopia?

MIT cosmologist Max Tegmark is no stranger to controversy. In his 2014 book Our Mathematical Universe, Tegmark proposed that our universe and everything in it are merely mathematical structures operating according to certain rules of logic. He argued that this hypothesis answers Stephen Hawking’s question “What breathes fire into the equations?” — there is no need for anything breathing fire into mathematical equations to create the universe, because the universe is a set of mathematical equations.

In his latest book, Life 3.0: Being Human in the Age of Artificial Intelligence, Tegmark surveys some of the recent advances of the AI

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Fine tuning and Fermi’s paradox

A “freakishly” fine-tuned universe

Ever since the time of Copernicus, the overriding worldview of scientific discovery has been that there is nothing special about Earth and humanity: the Earth is not the center of the solar system — we are merely one of several planets orbiting the Sun; the Sun is not the center of the Milky Way — it is merely one of over 100 billion stars in the galaxy; the Milky Way is not the center of the universe — it is merely one of over 100 billion galaxies in the universe; etc. Indeed, this “Copernican principle” has

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New Go-playing program teaches itself, beating previous program 100-0

A potentially momentous milestone has been reached in the decades-old battle between human intelligence and artificial intelligence.

Go playing board

Until 18 months ago ago, the ancient Chinese game of Go had firmly resisted attempts to apply computer technology — the best human players were substantially better than the best computer programs. This changed abruptly in March 2016, when a Google computer program named “AlphaGo” defeated the reigning world champion 4-1, a defeat that shocked many observers, who had not expected to see this for many years.

Now a new computer program, called “AlphaGo Zero,” which literally taught itself

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Fibonacci: A man of numbers

Keith Devlin, well-known mathematician and author, has published two books on Leonardo Pisano (Leonardo of Pisa), better known to many today as “Fibonacci,” short for “filius Bonacci” (son of the Bonacci family), a name ascribed to Leonardo by the 19th century French historian Guillaume Libri. Devlin argues that Leonardo deserves to be ranked among the all-time most influential scientists and mathematicians, mainly for his key role in popularizing the Hindu-Arabic decimal system to Western Europe during the early Renaissance.

Devlin’s books are:

The Man of Numbers: Fibonacci’s Arithmetic Revolution Finding Fibonacci: The Quest to Rediscover the Forgotten Mathematical Genius Who

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Talks on experimental mathematics

On 3 October 2017 I presented six talks at a seminar on experimental mathematics at the University of Newcastle, in Newcastle, NSW Australia.

Here are the titles and abstracts of these talks, plus URLs for the complete PDF viewgraph files:

1. What is experimental mathematics? (15 minutes)

This overview briefly summarizes what is meant by “experimental mathematics”, as pioneered in large part by the late Jonathan Borwein. We also explain why experimental mathematics offers a unique opportunity to involve a much broader community in the process of mathematical discovery and proof — high school students, undergraduate students, computer scientists,

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Origin of decimal arithmetic with zero pushed back to 3rd century CE

The Bakhshali manuscript

The Bakhshali manuscript is an ancient mathematical treatise that was found in 1881 in the village of Bakhshali, approximately 80 kilometers northeast of Peshawar (then in India, now in Pakistan). Among the topics covered in this document, at least in the fragments that have been recovered, are solutions of systems of linear equations, indeterminate (Diophantine) equations of the second degree, arithmetic progressions of various types, and rational approximations of square roots (more on this below).

The manuscript features an extensive usage of decimal arithmetic — the same full-fledged positional decimal arithmetic with zero system that we

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