In many of the more relaxed civilizations on the
Outer Eastern Rim of the Galaxy, the 'Hitchhiker's 
Guide' has already supplanted the great 'Encyclopedia 
Galactica' as the standard repository of all knowledge 
and wisdom, for though it has many omissions and 
contains much that is apocryphal, or at least wildly 
inaccurate, it soars over the other, more pedestrian 
work in two important respects.

      First, it is slightly cheaper; and second, 
it has the words DON'T PANIC inscribed in large 
friendly letters on its cover...

                                  ~Douglas Adams, 
                                     'The Hitchhiker's Guide to 
                                                    the Galaxy'