[continued from previous message]   
      
   > Once again, I remind you the book is 100 years   
   > old. The above discussion shows that folks in the arts and sciences are   
   > still making elementary mistakes of the sorts described.   
      
   Of course, there is no end to the mistakes people will make.   
   By Murphy, the best remedy is not correction afterwards,   
   but using sane systems beforehand   
   that makes most of those errors impossible to make.   
      
   Jan   
      
   --   
   "Don't tell me what is wrong with the works of others. Do something good   
   yourself!" (a grumpy old professor I knew long ago)   
      
   [1] Typical example: It is sometimes claimed that you can -derive-   
   the period of a pendulum using dimensional arguments,   
   as depending on length of the pendulum and small g only.   
   (and hence independent of amplitude)   
   This is a typical example of assuming what needs to be shown.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)