title: Darwin's Watch: The Science of Discworld III
author:  Terry Pratchett 
description: An irreverent but genuinely profound romp through the history and philosophy of science, cunningly disguised as a collection of funny stories about wizards and mobile luggage. <i>Frontiers</i><br /> <br /> [Pratchett alters] history with such brilliant effortlessness . . . it all gels into a cohesive and exciting whole  which demands to be both read and enjoyed. For anyone looking for something fresh or even more off the beaten path than Pratchetts own Discworld universe, one would be hard pressed to find a better pick than this. ScienceFiction.com
zlib_text: Terry Pratchett
  
  
  
  
  
  
  
  
  Witches Abroad
  
  
  
  
  
  
  
  
  A Discworld Novel
  
  
  This is the Discworld, which travels through space on the back of four
  elephants which themselves stand on the shell of Great A’Tuin, the sky turtle.
  
  
  Once upon a time such a universe was considered unusual and, possibly,
  impossible.
  
  
  But then … it used to be so simple, once upon a time.
  
  
  Because the universe was full of ignorance all around and the scientist panned
  through it like a prospector crouched over a mountain stream, looking for the
  gold of knowledge among the gravel of unreason, the sand of uncertainty and
  the little whiskery eight-legged swimming things of superstition.
  
  
  Occasionally he would straighten up and say things like ‘Hurrah, I’ve
  discovered Boyle’s Third Law.’ And everyone knew where they stood. But the
  trouble was that ignorance became more interesting, especially big fascinating
  ignorance about huge and important things like matter and creation, and people
  stopped patiently building their lit