Sunday, December 15, 2013

Vaccinations

Wednesday, December 11, 2013

Saturday, November 16, 2013

Benford's Law

A phenomenological law also called the first digit law, first digit phenomenon, or leading digit phenomenon. Benford's law states that in listings, tables of statistics, etc., the digit 1 tends to occur with probability ∼30%, much greater than the expected 11.1% (i.e., one digit out of 9). Benford's law can be observed, for instance, by examining tables of logarithms and noting that the first pages are much more worn and smudged than later pages (Newcomb 1881). While Benford's law unquestionably applies to many situations in the real world, a satisfactory explanation has been given only recently through the work of Hill (1998).



http://mathworld.wolfram.com/BenfordsLaw.html


http://www.jstor.org/discover/10.2307/27857060?uid=3739688&uid=2&uid=4&uid=3739256&sid=21102931270737

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Wednesday, September 18, 2013

Putting Time In Perspective

Humans are good at a lot of things, but putting time in perspective is not one of them.  It's not our fault—the spans of time in human history, and even more so in natural history, are so vast compared to the span of our life and recent history that it's almost impossible to get a handle on it.  If the Earth formed at midnight and the present moment is the next midnight, 24 hours later, modern humans have been around since 11:59:59pm—1 second.  And if human history itself spans 24 hours from one midnight to the next, 14 minutes represents the time since Christ.


http://www.waitbutwhy.com/2013/08/putting-time-in-perspective.html