> the entire concept of paging and virtual memory is built around the concept of not letting one process see what the other one is doing... If we’re to say that

> the entire concept of paging and virtual memory is built around the concept of not letting one process see what the other one is doing... If we’re to say that you don’t need isolation, we could just drop paging and every process just have a view of every other process. This seems to be moving goalposts. It's like saying curtains were built around the idea of not letting one person see inside a house, so the moment IR sensors (or Wi-Fi or radar or whatever) start being able to see in the house, everyone might as well just remove their curtains.