Brain Explorer. Unit Conversions. Video: Some Very Impressive Computer-Generated Falling Dirt and Flying Neckties. Download Graphic Images from the Hillis/Bull Lab. Return to "Download Files" Page You are welcome to download the following graphic image of the Tree of Life for non-commercial, educational purposes: Tree of Life (~3,000 species, based on rRNA sequences) (pdf, 368 KB) (see Science, 2003, 300:1692-1697) This file can be printed as a wall poster. Printing at least 54" wide is recommended. (If you would prefer a simplified version with common names, please see below.) Blueprint shops and other places with large format printers can print this file for you. Tree of Life tattoo, courtesy of Clare D'Alberto, who is working on her Ph.D. in biology at the University of Melbourne. Here is another great Tree of Life tattoo! Cover of Molecular Systmatics, 2nd ed Here is yet another version from Hannah Udelll at the University of Wisconson-Madisson.
From the exhibit Massive Change:The Future of Global Design: Here is a version modified by artist Carol Ballenger, commissioned by a hospital: This figure has been printed and used in many places. We are listening. What is Occams Razor? [Physics FAQ] - [Copyright] Updated 1997 by Sugihara Hiroshi. Original by Phil Gibbs 1996. Occam's (or Ockham's) razor is a principle attributed to the 14th century logician and Franciscan friar William of Ockham. Ockham was the village in the English county of Surrey where he was born.
The principle states that "Entities should not be multiplied unnecessarily. " Sometimes it is quoted in one of its original Latin forms to give it an air of authenticity: "Pluralitas non est ponenda sine neccesitate" "Frustra fit per plura quod potest fieri per pauciora" "Entia non sunt multiplicanda praeter necessitatem" In fact, only the first two of these forms appear in his surviving works and the third was written by a later scholar. Many scientists have adopted or reinvented Occam's Razor, as in Leibniz's "identity of observables" and Isaac Newton stated the rule: "We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances. " References: W. W.