> You won't be able to run multiple applications without multi-tasking. But that doesn't mean you really need to make use of multi threading in your program, s

> You won't be able to run multiple applications without multi-tasking. But that doesn't mean you really need to make use of multi threading in your program, since the OS is already doing it. > The only advantage of parallelism compared to concurrency is more performance. Only if your program can be parallelized. And even if you do manage to parallelize it, in the best case, you'll only get a 4X or 8X performance increase, which is not a big order of magnitude.