Apparently, neither did the Quip toothbrush people.
How is Quip better than good old Google Docs?
EDIT: Just looking at it, it looks very reminiscent of Apache Wave, which I was (unfortunately) a fan of. I wonder if it was inspired by it?
EDIT 2: It seems that Quip, unlike Google Docs, is end to end encrypted, which makes it possible to use on corporate intranets that normally forbid tools like Google Docs for security reasons. Hrm.
EDIT 3: Might as well plug the newest thing _I_'ve heard of. https://discordapp.com/ is a great voice chat client, intended for gaming but surely useful for productive ends. It's Erlang-backed, as well. Seems to have great connection quality and is just a nice, fun app.