Supporting tooling has been one of the most important aspects of this project, because even those who were willing to write asynchronous code, and even the few who actually enjoyed it, constantly complained — and rightly so — that they cannot easily observe, debug and profile such programs. When it comes to "serious" applications, observability is one of the most important aspects and requirements of a system.

Instead of introducing new kind of sequenatial code unit through all layers of tooling — which would have been a huge project anyway, we abstracted the existing thread concept.