Sure. So it's easier to make programs that scale well. However, given sufficiently low-level primitives, you can completely emulate the Erlang model, with probl

Sure. So it's easier to make programs that scale well. However, given sufficiently low-level primitives, you can completely emulate the Erlang model, with problem-specific extra hacks to help performance. No, it's not as easy. It's possible to make it perform much better, though, through micro-optimization of the specific operations needed. It's similar to doing a problem in assembly. On the macro level, it takes far less effort to make a performant system in a high level language, however for simple algorithms that are commonly used, you can typically get a threefold speed improvement by doing them in assembly, for a significant increase in implementation effort. Wow, I never thought I'd compare Java to assembly.