The parent is using multi-processing to mean: “no shared memory concurrent processing” Which still isn’t quite good enough because files (especially mmaped fil

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”.