> when the "talking directly to the display server" approach incurs so much more cost, unless you were willing to accept an unusably minimal user interface (wor

> when the "talking directly to the display server" approach incurs so much more cost, unless you were willing to accept an unusably minimal user interface (worse than any terminal program would be). Talking directly to display server simply can not incur more cost than having terminal application and then terminal emulator talking to display server; the talking to display server is something you need anyways, and anything else (like having a tty layer) is just additional cost on top of that.