>  I think I've heard Guido say the last attempt at removing the Global
>  Interpreter Lock (GIL) resulted in a Python that was much slower...

What is it about Python that makes a thread-safe CPython version much
slower?  Why doesn'ttrue threading slow down other languages like Perl
and Java?

I'm thinking it might be the reference counting approach to memory
management... but what do you guys think is the reason?

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