Uses slackcat, https://github.com/rlister/slackcat, to feed a rant, over seven minutes, about why email still has value into a Slack channel. I deliberately included syntax errors to make it seem like a real-time composition.
The content is the content, but the demonsration part is that reading an argument while someone is composing it, instead of after it's written, is going to take a long time. And you never know when you're going to drop into a long discourse over some topic.
TODO: The 7 minutes should change to compute actual time using a heredoc, but good enough for now.