MRI has native threads a GIL, but you can already release the GIL and run freely in native extensions. And this is _not_ a property of native vs. green threadi

MRI has native threads a GIL, but you can already release the GIL and run freely in native extensions. And this is _not_ a property of native vs. green threading. (And shows how shallow the comparison is, given the number of languages that implement green threads mapped to native threads nowadays.)