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David H. Bailey
David H. Bailey juggles careers in scientific supercomputing and mathematics, publishing books and papers in both (and, more often than not, finding interesting interconnections between the two). One of his mathematics papers, co-authored with Peter Borwein and Simon Plouffe of Canada, presented a new formula for pi, which formula permits one to calculate binary or base-16 digits of pi beginning at an arbitrary starting point, without needing to calculate any of the digits that came before. He has also explored the randomness of the digits of pi.

Bailey is recently retired from the Lawrence Berkeley National Laboratory in Berkeley, California; he is also a Research Fellow at the University of California, Davis. He and his long-time colleague Jonathan Borwein (brother of Peter) have jointly written numerous books, technical papers and columns. Together they blog as Math Drudge. Bailey's website is

Disclaimer: Articles written or co-authored by Bailey do not necessarily reflect the views of his institutional affiliations.

Entries by David H. Bailey

How likely is it that scientists are engaged in a conspiracy?

(12) Comments | Posted February 1, 2016 | 2:20 PM

Frauds in scientific research

From time to time, the scientific community is rocked by cases of scientific fraud. Needless to say, such incidents do not help instill confidence in the public mind that is already predisposed to be skeptical of inconvenient scientific findings. Some notable cases include: (a) a series...

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Data vs Theory: The Mathematical Battle for the Soul of Physics

(86) Comments | Posted December 30, 2015 | 1:48 PM


These are exciting times for the field of physics. In 2012, researchers announced the discovery of the Higgs boson, a discovery four decades in the making, costing billions of dollars (and euros, pounds, yen and yuan) and involving some of the best minds on the planet. And in...

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Interview With Andrea Rossi, LENR Energy Pioneer

(18) Comments | Posted October 6, 2015 | 4:37 PM


As we explained in earlier Huffington Post articles (HP#1) and HP#2), a revolution of sorts is brewing in the clean energy field, with the emergence of fusion and "low energy nuclear reaction" (LENR) energy. These processes, unlike fission reactions used in conventional nuclear reactors, need not emit...

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Cold Fusion Heats Up: Fusion Energy and LENR Update

(76) Comments | Posted August 28, 2015 | 12:20 AM


The world faces a grim future if we do not immediately rein in consumption of fossil fuels. Risks include rising sea levels, more frequent extreme temperatures, flooding, drought and conflicts among human societies. An eventual sea level rise of 6 meters now seems pretty much assured. Additionally,...

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Does Gun Control Encourage Crime? The Science of Crime Statistics

(128) Comments | Posted August 3, 2015 | 12:37 PM


It is widely believed that modern society is in sharp decline. Crime, especially, is widely considered to be steadily soaring out of control. American politicians frequently join the fray, using the crime issue to assert various political points. For example,

  1. Democratic front-runner Hillary Clinton is an advocate...
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How Well Do Individuals Understand Social Security (And Its Overseas Counterparts)?

(6) Comments | Posted June 25, 2015 | 6:29 PM


Unfortunately, from all evidence, individual investors are not very well equipped, and certainly not very effective, in managing their own investments, or in making other key financial decisions.

U.S. 401(k) accounts, and their equivalents elsewhere, are a particular problem. According to the 2014 DALBAR report, over the past...

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Lessons From the "Flash Crash" Regulatory Fiasco

(0) Comments | Posted April 27, 2015 | 12:06 AM

On April 21, 2015, the U.S. Department of Justice announced that it would press criminal charges against Mr. Navinder Singh Sarao, a 36-year-old small-time British day-trader. He is being blamed for nothing less than causing the "Flash Crash" of May 6, 2010, the second largest point swing (1010.14 points) and...

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Desperately Seeking ET: Fermi's Paradox Turns 65 (Part II)

(37) Comments | Posted April 17, 2015 | 6:10 PM


Why is it so hard to find ET? After 50 years of searching, the SETI project has so far found nothing. In the latest development, on April 14, 2015 Penn State researchers announced that after searching through satellite data on 100,000 galaxies, they saw no evidence, such...

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Where is ET? Fermi's Paradox Turns 65

(66) Comments | Posted April 10, 2015 | 4:21 PM

65 years ago, in 1950, while having lunch with colleagues Edward Teller and Herbert York, Nobel physicist Enrico Fermi suddenly blurted out, "Where is everybody?" His question is now known as Fermi's paradox.

Fermi's line of reasoning was the following: (a) Most likely there are numerous...

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How Have 2014 Market Prophets Fared?

(0) Comments | Posted December 9, 2014 | 4:56 PM

Predicting the future has never been easy, but the standard today is the same as in ancient times: does the prediction come true? As an ancient Hebrew author wrote, "When a prophet speaketh, ... if the thing follow not, nor come to pass, ... the prophet hath spoken it presumptuously:...

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Low Energy Nuclear Reactions: Papers and Patents

(23) Comments | Posted November 28, 2014 | 6:29 PM

The world community is truly at a crossroads like never before faced in the history of our civilization. If we continue business-as-usual with the consumption of fossil fuels, then, according to the 2014 edition of the Intergovernmental Panel on Climate Change (IPCC)'s climate change report, grave consequences...

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Dubious Digits: Is This Data Really That Accurate?

(1) Comments | Posted November 10, 2014 | 3:31 PM

When numbers of any sort are presented, whether in mathematics, science, business, government or finance, the default assumption is that the data presented are reasonably reliable to the last digit presented. Thus, if a light bulb is listed as using 3.14 watts, then its actual usage is presumably between 3.13...

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Fusion Energy: Hope or Hype?

(33) Comments | Posted October 23, 2014 | 4:26 PM

The IPCC Report's Warning

The latest draft edition of the UN's Intergovernmental Panel on Climate Change (IPCC) report bluntly warns that business-as-usual increases in greenhouse-gas emissions will cause "further warming and long-lasting changes" in the Earth's climate system, with increasing likelihood of "severe, pervasive and irreversible impacts for people...

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To Frack or Not to Frack: That Is The Question

(1) Comments | Posted September 9, 2014 | 4:28 PM

The Latest IPCC Report

The latest draft edition of the UN's Intergovernmental Panel on Climate Change (IPCC) report includes some rather stark language:

Continued emission of greenhouse gases will cause further warming and long-lasting changes in all components of the climate system, increasing the likelihood of severe, pervasive...

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How Financially Literate Is the Investing Public?

(1) Comments | Posted July 29, 2014 | 12:15 PM


A June 2014 study released by the Employee Benefit Research Institute concluded that many U.S. Baby Boomer and Gen Xer households are expected to run short of money in retirement (assuming 35 years in retirement): 83 percent of those in the lowest income quartile, 47 percent in...
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Can Pi Be Trademarked?

(4) Comments | Posted June 20, 2014 | 7:49 PM


Intellectual property law is complex and varies from jurisdiction to jurisdiction, but, roughly speaking, creative works can be copyrighted, while inventions and processes can be patented. In each case the intention is to protect the value of the owner's work or possession.

For the most part, mathematics is...

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Pi Day 3.14 (14)

(1) Comments | Posted March 14, 2014 | 1:01 AM


Pi Is Very Old

The number pi = 3.14159265358979323846... is arguably the only mathematical topic from very early history that is still being researched today. The Babylonians used the approximation pi ≈ 3. The...

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Why Mathematics Is Beautiful and Why It Matters

(0) Comments | Posted February 18, 2014 | 4:52 PM

Scientists through the ages have noted, often with some astonishment, not only the remarkable success of mathematics in describing the natural world, but also the fact that the best mathematical formulations are usually those that are the most beautiful. And almost all research mathematicians pepper their description of important...

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When Skepticism Becomes Denial: The Unholy Alliance Between Science Denial Movements

(216) Comments | Posted November 5, 2013 | 8:49 PM

One of the most perplexing side effects of the Information Age is the means that it unfortunately grants to many pseudoscientific and science-denial movements to gain foothold and mutually strengthen numbers. Gone are the days when everyone would read or listen to common, well-researched, professionally written news.

Nowadays, everyone can...

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Please Mess With Texas: Textbook Fiasco Threatens U.S. Science

(230) Comments | Posted September 18, 2013 | 8:54 PM


Once again Texas has joined a list of U.S. states that are fighting a rear-guard war against the progress of modern science.

On Sept. 9, 2013, the National Center for Science Education and the Texas Freedom Network issued a joint news release expressing alarm at comments made...

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