The passage Daniele Besomi   
  
[http://eh.net/pipermail/hes/2005-May/003034.html ]  
  
refers to is:  
  
"The history of science is far from being a linear unfolding that  
corresponds to a series of successive approximations toward some intrinsic  
truth.  It is full of contradictions, of unexpected turning points."  
Prigogine and Stengers (1984) "Order out of Chaos" p xxviii  
  
  
Andy Denis