While I also find arguing for the sake of arguing tiresome, the comment your responding to makes a good point. The linked project beats Go fibers using PyPy, which is JIT compiled, where hot codepaths are not interpreted. A language is a set of rules (hopefully described in a specification...) - you can have interpreted C++, or compiled Python. The popular implementations are just that: implementations, of which others exist.

> Rather than convince them, you are destroying your own credibility and probably making a fool of yourself in their eyes.

I'd understand where you were coming from had the parent comment not explained what they meant and given examples.