[zhong-j-yu]

We can argue that thread sucks because it is expensive. But we must measure how expensive it actually is in real world applications, before abandoning it. If a server must maintain a few hundred concurrent threads, it is really nothing.

[pacala]

To be precise, threads suck because thread _scheduling_ is expensive. From a logical pov, structured programming still rules, and threads are an excellent way to implement structured programming.