Don't remember the link but one of their articles taught talked on chat vs email was the benefit o retaining organizational knowledge, staff can go and be staff

Don't remember the link but one of their articles taught talked on chat vs email was the benefit o retaining organizational knowledge, staff can go and be staff come and you can still join the same chat group for a topic and get up to speed. I think then that their intention is to have most chats open and people can break out new groups when a bunch of discussion starts to be of topic, implying it needs a topic of its own.