http://www.perlmonks.org?node_id=263091


in reply to Re: Perl 6 feature that scares me the most:
in thread Perl 6 feature that scares me the most:

The whole concept of Perl 6 frightens me. I fear that I'll have to relearn large chunks of the language. I fear that I'll have to do a major porting effort on my existing code should Red Hat, Sun, or SGI decide to ship with Perl 6 instead of 5. It's not so much that I fear change, just big change.
It would be a disaster if installing Perl6 broke all Perl5 scripts. Since Larry has no desire to author a disaster, he has mandated that Perl6 be compatible with Perl5. The compiler will only go into Perl6 mode when encountering some Perl6 construct, like 'module'.