Examples of good reasons for breaking backward compatibility, are removing '.' from the module search path, and making hash functions output different results from run to run. 'use v7' is as little boilerplate as possible, in my view. Core implementors have come on to say that breakage such as new strict / warnings default are not needed for continued improvements to core.

In reply to Re^2: RFC -- Evolving Perl: a Decision Theory Approach to the Challenges of Perl 7 by Anonymous Monk
in thread RFC -- Evolving Perl: a Decision Theory Approach to the Challenges of Perl 7 by thechartist

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