I don't understand what's the value in having 3 people in the room looking at you solve a coding problem, at any level of seniority. Sounds like it's just wasti

I don't understand what's the value in having 3 people in the room looking at you solve a coding problem, at any level of seniority. Sounds like it's just wasting the time of 3 engineers when 1 could perform the task.