> And lastly, choose boring technology. Only use software that you're sure will be supported in 10 years. Only use software, which has very few "unknown unknowns". Only use software, where the development pace has slowed down to a reasonable degree.
Perl 6 is incompatible in all sorts of ways. It's so incompatible that people didn't even upgrade! So incompatible that they renamed the language! Even more incompatible than Python 3!
Even Perl 5 is rapidly evolving. They just added try/catch. Added a new isa operator. Added a new __CLASS__ keyword. Added defer blocks.
Perl has been stable for a couple of decades.