If you work at a 10,000-person company, and you're using e-mail as the primary means of communication, then you probably have access to a couple hundredths of 1 percent of all the communications happening across the company. But if you use Slack, you might have access to 10 or 20 percent.

I no longer file expense reports, so I no longer experience the pain of it. What if everyone had a virtual assistant to do that kind of effort... like approving time off or submitting time-off requests? We want to really encourage developers to create cool things for Slack.

People tend to overestimate the short-term impact of technological change. In the short-term, it's not going to make that much of a difference.

Stewart Butterfield Quotes