michaelnielsen.org
Reinventing Explanation
http://michaelnielsen.org/reinventing_explanation
The Babylonian Map of the World. Is one of the world's oldest extant maps, dating to 600 BCE. It's a crude map, difficult to read at a glance, but fortunately an accompanying cuneiform text describes the features on the map, including Babylon, seven other cities, a canal, and a mountain:. Obvious, but had to be invented. This agglomeration of ideas has turned maps into a powerful. Consider the famous map of the London Underground, excerpted here:. In the bottom right of the video player:. What are the mo...
michaelnielsen.org
Open Architecture Democracy | Michael Nielsen
http://michaelnielsen.org/blog/open-architecture-democracy
Michael’s main blog. By Michael Nielsen on April 17, 2010. The singer Avril Lavigne’s third hit was a ballad titled “I’m With You”. Let me pose what might seem a peculiar question: should the second word in her song title – “With” – be capitalized or uncapitalized? This seems a matter of small moment, but to some people it matters a great deal. In 2005 an edit war. Return of the Jedi. 8211; is it 120, 160 or 900 kilometers in diameter? When one says that U2 “. Should that really be “U2. Said: “no s...
michaelnielsen.org
If correlation doesn’t imply causation, then what does? | DDI
http://www.michaelnielsen.org/ddi/if-correlation-doesnt-imply-causation-then-what-does
Michael’s main blog. If correlation doesn’t imply causation, then what does? By Michael Nielsen on January 23, 2012. It is a commonplace of scientific discussion that correlation does not imply causation. Business Week recently ran an spoof article. Pointing out some amusing examples of the dangers of inferring causation from correlation. For example, the article points out that Facebook’s growth has been strongly correlated with the yield on Greek government bonds: ( credit. Intended to address these an...
exocortex.org
Explorations in 4-Peg Tower of Hanoi
http://www.exocortex.org//toh/index.html
We verify that the presumed-optimal Frame-Stewart algorithm for 4-peg Tower of Hanoi is optimal, for up to 20 discs. In addition, we (a) develop a distributed Tower of Hanoi algorithm, and (b) present 2D and 3D representations of the state transition graphs. Finally, two variants (k-out-of-order and k-at-a-time) and an analogy with distributed agent software are suggested. 2D and 3D Visualizations of State Transition Graphs. A Distributed Solver for Tower of Hanoi Problems. With 2 and 3 discs.
exocortex.org
Explorations in 4-Peg Tower of Hanoi
http://www.exocortex.org/toh
We verify that the presumed-optimal Frame-Stewart algorithm for 4-peg Tower of Hanoi is optimal, for up to 20 discs. In addition, we (a) develop a distributed Tower of Hanoi algorithm, and (b) present 2D and 3D representations of the state transition graphs. Finally, two variants (k-out-of-order and k-at-a-time) and an analogy with distributed agent software are suggested. 2D and 3D Visualizations of State Transition Graphs. A Distributed Solver for Tower of Hanoi Problems. With 2 and 3 discs.
michaelnielsen.org
Reinventing Explanation
http://michaelnielsen.org/reinventing_explanation/index.html
The Babylonian Map of the World. Is one of the world's oldest extant maps, dating to 600 BCE. It's a crude map, difficult to read at a glance, but fortunately an accompanying cuneiform text describes the features on the map, including Babylon, seven other cities, a canal, and a mountain:. Obvious, but had to be invented. This agglomeration of ideas has turned maps into a powerful. Consider the famous map of the London Underground, excerpted here:. In the bottom right of the video player:. What are the mo...
michaelnielsen.org
The mismeasurement of science | Michael Nielsen
http://michaelnielsen.org/blog/the-mismeasurement-of-science
Michael’s main blog. The mismeasurement of science. By Michael Nielsen on November 29, 2010. Which, roughly speaking, is a type of pressure which keeps a static Universe from collapsing. Twelve years later, in 1929, Edwin Hubble discovered that the Universe isn’t static and unchanging, but is actually expanding. Upon hearing the news, Einstein quickly realized that if he’d taken his original 1915 theory seriously, he could have used it to. The problem of measuring science. To judge the quality of scienti...
