[laughter] [crosstalk] emily: oh my goodness, it's jared leto, everybody.ep, jared leto, the actor, who is also a tech investor, photobombed our chat with stewart butterfield, the seemingly quintessential serial silicon valley entrepreneur. but butterfield's story is anything but. in fact, he founded both of his companies by accident. flickr sold to yahoo for $27 million in 2004. today, slack, a workplace collaboration app, is worth more than $7 billion and it's now battling microsoft, google, and facebook. joining me today is the slack ceo and cofounder, stewart butterfield. stewart, thank you so much for being here. stewart: my pleasure. emily: you had an unconventional childhood. your parents were hippies and chose to raise you off of the grid in british columbia. what was that like? stewart: i was a pretty little kid. so i am not 100% clear on it. it was, in many ways, an idyllic childhood. i was raised in a log cabin. it's a great story because i kind of sound like abraham lincoln with no running water until i was three and no electricity until i was f