"Sharing the same physical machine is impossible for remote teams" -- if only there was some kind of network that would allow people to log into a machine remot

"Sharing the same physical machine is impossible for remote teams" -- if only there was some kind of network that would allow people to log into a machine remotely... More seriously, though, in the mid-90s, I worked at a place where most work stations were Sun Sparcs. One way of "coding together" was that one person did an xhost+ to allow a second frame of an Emacs running on a second person's machine to be opened on the first person's display. It was used only very rarely, though.