I started at a company that has an open office plan (i.e. where everyone sits in the same big open room and can freely walk between people). For those of you who have been doing this for awhile: how do you get anything done? One day I noticed that I got interrupted about every 20 minutes by something..even with the super duper noise canceling headphones. The times that I don't work in the office feel orders of magnitude more productive. Thanks.