[lmm]

> Actors can be made to do structured concurrency as long as you allow actors to wait for responses from other actors

At which point they're very much not actors any more. You've lost the deadlock avoidance, you can't do the `become`-based stuff that looks so great in small demos. At that point what are you gaining from using actors at all?

[brabel]

If you don't think actors are useful just because you need to wait for responses, I guess you've never used actors. That's just so implausible someone would say that if they just, you know, did it.