[dmitriid]

It takes on the order of nanoseconds to start an Erlang process. They are also extremely lightweight memory-wise. And Erlang VM tries to keep context switching between CPU cores to a minumum. And all processes get more-or-less equal share, so it's hard to get a process consuming all of CPU and never yielding back to other processes.

So firing off and monitoring processes becomes second nature easily. Rarely so in other languages