Slack is useful for solving problems, it is not useful for managing dynamics. It encourages a kind of public performance among non-technical people, and creates

Slack is useful for solving problems, it is not useful for managing dynamics. It encourages a kind of public performance among non-technical people, and creates the situation for a kind of callout culture where you can apply pressure by creating a public paper trail. It's great for small teams, but it does not scale. It rapidly becomes twitter with your bosses and co-workers, where almost nothing being said is worth saying, and anything worth saying shouldn't be said there.