%specifications{'Central_comparisons'}
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I personally believe that you're using Perl 6 already.

Update B: I have fixed the stupid mistake and now I get the error message  syntax error at correlations.pl line 163, near "%specifications{" Another stupid mistake I am sure

Indeed, thus you would probably save yourself the humiliation of showing off as an asshole one who does so many stupid mistakes by doing what people has been recommending to you for years, namely: get familiar with some elementary Perl first.