I don't know why you got downvoted. Then again, I'm not quite sure what you meant by "await is a partial solution" and "languages that are free to use threads have it best".
As far as your quote goes, I'll add:
> Or, more precisely: multiple independent callstacks that can be switched between. It isn’t strictly necessary for them to be operating system threads.
(Quoting the same paragraph you quoted.)
Standard Raku provides support for OS threads; green threads; coroutines; multiple independent callstacks that can be switched between; an `await` that doesn't require function coloring and is cooperative, supporting work stealing of its thread when it's waiting; multiple other constructs for concurrency, multiple others for asynchrony, multiple others for parallelism; and is an extensible PL anyway.
If you could briefly put your comment into that context, so that I (and perhaps other later readers) could better understand it, that would be helpful to me. I plan to upvote both your above comment and any below if what you're saying then makes sense to me. TIA if you have time to reply.
