Basically this. Theoretically, event-driven architecture within a single machine is just re-inventing pi-calculus (i.e. sending values on channels) So I would

Basically this. Theoretically, event-driven architecture within a single machine is just re-inventing pi-calculus (i.e. sending values on channels) So I would imagine anything single-threaded would not require it. Though admittedly, the only modern application or program that I can think of that would be single-threaded is a CLI command