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  my @likelihood = (1, 3, 4, 9, 2, 8);
  my @option     = qw(foo bar baz quux biz);

  my @likelihood =   (1,  3,  4,  9,   2,  8);
  my @option     = qw(foo bar baz quux biz);

  my @options = (
    { name => 'foo',  weight => 1 },
...
    { name => 'quux', weight => 9 },
    { name => 'biz',  weight => 2 },
  );