we were working on the game, we were using irc., for those people aren't familiar, is basically instant messaging. and it's based on what they call "channels." it's like a chat room. you can give it a name, you use a hash symbol to give a name to the channel, which is where twitter got its hashtags from. unbeknownst to us, we are developing this in the background, but in a totally subconscious way. it was so irritating to have a problem, and then we would address it in a number of minutes and then get back to what we were doing. and we'd let that kind of cook. emily: so, what was the moment you realized that slack was a thing and glitch was most certainly not? stewart: it happened the other way around. there was a moment, late at night, i hadn't been able to sleep well for a while. i was just really worried. the was always just one more thing we could try. and it was always like one more thing that would make a difference. again, it was a little too weird, a little bit esoteric, a little bit too unfamiliar for people. and i just re