Three Tales of Second System Syndrome

In the last decade, three major scripting languages embarked on project to produce a major revision to each language: Perl 6, Python 3, and PHP 6. Despite surface similarities, such as the problem of Unicode support, each language ended up on a radically different track. With the Perl 6.0.0 release officially coming this year, it's a good time to reflect on how we got to this point, and to start t