All old is new again, in different context. Windows 3.X programming was famously painful because it didn't have per-emptive processes. Each program had to yiel

All old is new again, in different context. Windows 3.X programming was famously painful because it didn't have per-emptive processes. Each program had to yield the control. Windows API was just cooperative async messaging. If you want to scale massively with async, do it Erlang way.