Yes. Concurrency is easier in functional languages. Many of them provide a concurrency monad which allows you to write expressions like this: read_from_soc

Yes. Concurrency is easier in functional languages. Many of them provide a concurrency monad which allows you to write expressions like this: read_from_socket_into_buffer params >>= process_buffer >>= ... Where you roughly read the '>>=' as follows: "the left side might take an arbitrary amount of time to produce a result. While it's off and doing its thing, go and do something else. Once it has produced the result, take it and feed it as a parameter to function on the right." BTW, It's quite easy to implement your own concurrency monad, however: the real work is the wrapping of all the blocking system calls into this framework.