Of course. Switching back and forth between async and threads can be a bad sign. I didn't mean to say that you should do it all the time, rather just to put som

Of course. Switching back and forth between async and threads can be a bad sign. I didn't mean to say that you should do it all the time, rather just to put some context around this: > You can only call a red function from within another red function. That's really really true in JS. There's no way to call an async function from a sync function, if you need to return its result. You are Capital-S-Screwed if you need to do that. But it's going to far to apply that absolute rule to other languages. When you have threads, it's pretty easy to mix sync and async code. It can be a bad idea, just like having a codebase that's half exceptions and half error returns is usually a bad idea, but you're certainly allowed to do it when it makes sense.