[plt-scheme] Mathematica v6

David Einstein writes: 

...
> Full disclosure: I have friends at Wolfram
...
> Mathematica is a very good, almost indispensable, tool for symbolic
> mathematics.  Other than the marketing department, it makes little
> pretense to being a general purpose programming language.

I wonder how far from the marketing department this term "almost
indispensable" has been cooked, in view of the existence of Maple, Magma,
MuPAD, Axiom, Macsyma/Maxima, perhaps MacCaulay2, GAP, etc., etc. 

Jerzy Karczmarczuk