Here's mine: 1. minimal distractions at 2. scheduled times that are 3. contiguous I'd go so far as to say that there are times where it's better for a single

Here's mine: 1. minimal distractions at 2. scheduled times that are 3. contiguous I'd go so far as to say that there are times where it's better for a single dev who is stuck on a project to keep his mouth shut for an hour or two than blasting a slack channel and blowing everyone else's concentration.