Stewart Butterfield

Email is the lowest common denominator. It's the way you get communications from one person to another. There isn't really an alternative. Sometimes people will have Facebook messenger turned on, but 99 percent of the time, if you're sending a message to a human you don't know well, you're using email.

The scale of revenue growth is unprecedented. If you look back over history, whether you're looking at the railway robber baron era or the 1920s or the '50s or the '70s, it used to take a long time for a company to get to the point where they had tens of millions of dollars of revenue. It was almost never an overnight phenomenon.

Every trend in my high school was terrible! I used to wear my hair in a tight bun and let two long pieces hang in the front. I'd also wear really dark eyeliner and bright pink eyeshadow. For some reason, my friends and I thought it was really fashionable to wear a short tie with our uniforms.