I use whiteboards all the time. The thing is, the timelines are completely different -- in real life, we usually write the problem down, work out obvious detai

I use whiteboards all the time. The thing is, the timelines are completely different -- in real life, we usually write the problem down, work out obvious details and a plan of attack, then come back to it hours or days later when people have had time to research and think. Never have I had a coworker interrupt me after 15 seconds to "say what I'm thinking about" any time I pause narrating. In real life, going "hmmm" and taking a couple minutes is acceptable. And you have people being constructive during those times, instead of interrupting you.