Work can absolutely happen is Slack if that is how your team uses it. Decisions can be made (and are then documented and can be referenced later, as long as your org pays for it, which they should if they expect it to be used for business/work and not just for random conversations. It's plenty durable if paid, but if it wasn't paid, I'd seriously consider one of the alternatives, even if slightly worse in some ways, of it keeps full history.
My "working with" would be almost the exact opposite of what you list (I like that idea though!). I tell people emails may get checked daily at best. We don't have a phone culture, we use huddles or video calls for synchronous conversations, but they do suffer from lack of documentation or note sometimes.
My "working with" would be almost the exact opposite of what you list (I like that idea though!). I tell people emails may get checked daily at best. We don't have a phone culture, we use huddles or video calls for synchronous conversations, but they do suffer from lack of documentation or note sometimes.