> I'm saying that, given a generic human Slack user, Slack's design team is optimizing for engagement. They are making explicit choices about how/where/why to show notifications and how the @ commands work, and their goals are to _increase engagement on Slack_.
There's a different kind of notification for direct messages, and situations where someone consciously decides to flag a specific person in a channel message. (All features that aren't unique to Slack, and that I would expect any chat application to have).
What would you expect it to do differently? It seems like the Slack devs are just making the notifications behave the way that I would intuitively expect them to behave, and how most people use IRC or other group chat apps.
What incentive does Slack have to focus on metrics like "engagement" rather than building a genuinely useful product. They just charge the customer for it, they aren't an ad driven social network like Facebook where "engagement" actually directly translates to revenue.