from a system point of view, processes are turned off, don't you think?
from a user's point of view, at least I don't need this site for now, what do you think?
it should be possible to "achieve" such a requirement through ajax with history API
impossible. What do you mean by switching pages? Off? Of course you say no, just look at something else on the current page, that's fine. It's asynchronous. You can do whatever you want.