[tboyd47]

I agree with you completely on your main point, but you must admit that a person needs some time to concentrate in order to produce code. Even just 2 hours a day.

Unfortunately, a lot of companies are starting to measure "time working" via "time on Slack." My company is one of them, but it works out for us because my team exists in multiple time zones (making the interruptible hours of the day fewer).

This is not a problem that's specific to Slack. I guess if you're working in an open floor plan, you would have the same problem - or perhaps many people would be more shy to bother someone in person than online. Slack (and apparently this new tool too) doesn't help though. It seems to support an ever increasing array of notification options. You can set your status to "do not disturb," but people can and will still ping you when they feel like it.

[ThrustVectoring]

In-person has non-interrupting ways to get information about how busy someone looks. Chatting someone up at the water cooler is much different than someone at their desk, which is different still than someone who is looking through things with headphones on and a puzzled look on their face.