Not a bug; it's a feature?  The best thing about pseudorandom generators *is*
that they are not random. :)

Justin Collins wrote:
> Feature #929: Array#shuffle does not initialize random seed
> http://redmine.ruby-lang.org/issues/show/929
> 
> Author: Justin Collins
> Status: Open, Priority: Low
> Category: core, Target version: 1.9.1 Release Candidate
> 
> Unlike calling Kernel#rand, Array#shuffle and Array#shuffle! do not automatically seed the random number generator. This means subsequent runs of the same program will produce the same shuffles unless a separate call is made to Kernel#rand or Kernel#srand.
> 
> For example, running just
> 
> ruby -e 'p Array.new(50) {|n| n }.shuffle'
> 
> will always give the same output.
> 
> 
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