Agreed (and I like pypy) One example is that Pypy switched away from reference-counting to fully garbage collected. They are probably right that's faster, but

Agreed (and I like pypy) One example is that Pypy switched away from reference-counting to fully garbage collected. They are probably right that's faster, but if I'm running a webserver, it's actually really comforting to know that any garbage produced by the processing of a request is collected when that request ends (barring cycles of course) so I don't end up with weird hangups.