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Why Not[] is not Listable by default ?

  • To: mathgroup at
  • Subject: [mg51479] Why Not[] is not Listable by default ?
  • From: János <janos.lobb at>
  • Date: Tue, 19 Oct 2004 02:55:56 -0400 (EDT)
  • Sender: owner-wri-mathgroup at



Should Not[] be Listable by default ?  BOOK says: "â?¼ Most builtâ??in 
mathematical functions are Listable. "

Of course I can always do SetAttributes[Not,Listable], but I do not 
know what kind of harm does it do on the long run.  /I assume Not[] is 
widely/wildly used inside Mathematica/

Any Pros and Cons on it ?

P.S.  Sorry if it is an old bone, I just want to see clearly the 
argument for it :)

Trying to argue with a politician is like lifting up the head of a 
(S. Lem: His Master Voice)

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