The parent is using multi-processing to mean: “no shared memory concurrent processing”

Which still isn’t quite good enough because files (especially mmaped files) can be abused as shared memory even between multiple processes. But the general point is good, “you’re better off with mutable xor shared memory while concurrently processing”.

Right process aren't "shared nothing" but at least it makes you work a little bit before you can shoot yourself in the foot..

Sorry, the other reply explained what I meant. "Multiprocessing" has many meanings but specifically when contrasted with "multithreading" it usually implies the thread/process distinction in the Unix sense of the terms.