Monthly Archives: September 2009

7 posts

Bookmarks for September 28th from 06:58 to 16:49

These are my links for September 28th from 06:58 to 16:49: A Mathematician’s Lament – The first thing to understand is that mathematics is an art. The difference between math and the other arts, such as music and painting, is that our culture does not recognize it as such. Everyone understands that poets, painters, and musicians create works of art, and are expressing themselves in word, image, and sound. In fact, our society is rather generous when it comes to creative expression; architects, chefs, and even television directors are considered to be working artists. So why not mathematicians? Part of […]

Carl Sagan – ‘A Glorious Dawn’ ft Stephen Hawking

Quite possibly the best use of AutoTune to date: Lyrics: [Sagan] If you wish to make an apple pie from scratch You must first invent the universe Space is filled with a network of wormholes You might emerge somewhere else in space Some when-else in time The sky calls to us If we do not destroy ourselves We will one day venture to the stars A still more glorious dawn awaits Not a sunrise, but a galaxy rise A morning filled with 400 billion suns The rising of the milky way The Cosmos is full beyond measure of elegant truths […]

Bookmarks for September 22nd through September 25th

These are my links for September 22nd through September 25th: Miniature Pearl: Causal Inference in Statistics: An Overview”, forthcoming in Statistics Surveys 3 (2009): 96–146 – This review presents empirical researchers with recent advances in causal inference, and stresses the paradigmatic shifts that must be undertaken in moving from traditional statistical analysis to causal analysis of multivariate data. Special emphasis is placed on the assumptions that underly all causal inferences, the languages used in formulating those assumptions, the conditional nature of all causal and counterfactual claims, and the methods that have been developed for the assessment of such claims. These […]

Water on the Moon and a Few Calculations

Water has been found on the moon! A few figures I quickly calculated: The moon‘s surface area is 3.793 × 10^7 km.  Scraping off a few millimeters of soil that contain water would yield 75,860 cubic meters of soil containing 1 liter of water each. So the theoretical upper yield (assuming no other water on the moon) is 75,860 liters, which is about 20,040 gallons of water.   For context, this would fill a little over 3% of a standard 164×82 ft Olympic pool. According to How Stuff Works, it costs about $50,000 per pound to get stuff to the moon. […]

Bookmarks for September 14th through September 22nd

These are my links for September 14th through September 22nd: Philosophy Now | Daniel Dennett: Autobiography (Part 1) – What makes a philosopher? In the first of a two-part mini-epic, Daniel C. Dennett contemplates a life of the mind – his own. Part 1: The pre-professional years. Philosopher’s Annual – Our goal is to select the ten best articles published in philosophy each year—an attempt as simple to state as it is admittedly impossible to fulfill. Against a background of twenty-four volumes in hard copy, the Annual is now available entirely online. Revolutions: Interactive stock visualizations with R – Jeroen […]

Bookmarks for September 8th through September 14th

These are my links for September 8th through September 14th: Jaakko Hintikka, Past, present and future of set theory | PhilPapers – What one can say about the past, present and future of set theory depends on what one expects or at least hopes set theory will accomplish…I begin with a quote from the inaugural lecture in 1903 of my mathematical grandfather, the internationally known Finnish mathematician Ernst Lindelöf. The subject of his lecture was – guess what – Cantor’s set theory. In his conclusion, Lindelöf says of Cantor’s results: For mathematics they have lent new tools and opened up […]