FTA: "They could potentially be deeply focused on a task, but if there is an urgent task that I need from them, I can likely safely contact them."<p>You interrupt me during deep focus time[0] and the last thing you should feel is safe. There had better be a critical emergency, someone dying, major financial risk or otherwise an important+urgent issue. Urgency by itself won't protect you.<p>Otherwise you will find yourself the subject of this week's debrief meeting about "what didn't work" and more importantly, now responsible for paying for drinks and food for the rest of the team. We each have a block of time allocated and we aren't joking about how rare and precious actual uninterrupted time is.<p>[0] around 3 hours blocked out per day ahead of time.